We know how overwhelming it can be to pick the right footwear when every brand promises comfort and performance, so we like to compare like-for-like and highlight what really matters. If you’re weighing the On Men’s Cloud 5 Sneakers against the Merrell Women’s Siren Edge 3 Shoes, we’ll walk through what makes each one distinctive — from everyday cushioning and street-friendly style to trail-ready support and traction — so you can decide which fits your routine best.
Footwear like these has come a long way from the simple leather and rubber designs of the past. Over the decades running and hiking shoes have borrowed technology from each other, bringing advanced cushioning, breathable uppers, and more sophisticated outsoles into everyday and outdoor models alike. Owning either pair delivers clear benefits: reduced fatigue from better shock absorption, improved foot protection and stability, and more confidence on varied terrain. In the rest of this article we’ll take a closer look at each model’s fit, comfort, materials, performance, and who they suit best, so we can help you choose the pair that will serve your lifestyle.
[Here are a few simple options:
- Men’s Cloud 5 Sneakers
- On Cloud 5 Men’s Sneakers
- Men’s Cloud 5 Running Shoes (On)](https://www.amazon.com/dp/B0DML19VCD?tag=runningshoes0d2-20)
We see the On Cloud 5 as a versatile running shoe that performs best on paved roads, smooth trails, and around town. Its design focuses on lightness and impact protection, so it excels for daily training runs, tempo work, and easy recovery miles. The shoe’s soft landings and stable platform also make it a great option for runners who mix treadmill sessions, gym workouts, and stand-and-walk days—basically anyone who needs a shoe that transitions easily from a morning run to commuting or casual wear.
If you prioritize cushioning, a lively ride, and a lightweight feel without sacrificing protection, the Men’s On Cloud 5 is for you. It’s particularly well suited to neutral runners, those who like a responsive feel underfoot, and people who want the sensation of being propelled forward without the bulk of heavily cushioned trainers. We also recommend it to runners who appreciate modern tech—Cloudtec in Zero Gravity foam and the Speedboard—and want a shoe that helps conserve energy during longer efforts.
We’ve found the Cloud 5 fits true to size for most runners, with a secure midfoot and a slightly roomier toe box than some previous On models. If you have wider feet, the forefoot still feels accommodating, thanks to the design of the upper and closed channel forefoot that stabilizes the front foot without compressing it. We advise trying your usual running size, but consider half a size up if you prefer extra toe wiggle room or plan to use thicker socks for cooler-weather runs.
One of the first things we notice when we lace up the On Cloud 5 is the immediate sense of plushness paired with responsiveness. The Zero Gravity foam cushions both vertical and horizontal forces, meaning impacts feel less jarring and landings are impressively soft. The updated midsole height adds a noticeably cushioned platform, and the interplay between the foam and Cloudtec pods gives a smooth, rolling sensation from heel strike to toe-off. For us, that translates to less fatigue on longer runs and a forgiving ride during high-mileage weeks.
We really appreciate the updated Cloud 5 Speedboard—On’s engineering tweak that shifts energy from impact into forward momentum. It’s subtle but effective: we feel a slight propulsive nudge through mid to late stance, which helps maintain cadence and makes tempo efforts feel snappier. If you chase personal-best efforts or simply like a shoe that helps you feel efficient over distance, the Speedboard is one of the reasons we keep this model in our rotation.
The Cloud 5 isn’t just for runs; it’s also great for everyday wear. The lightweight construction keeps our feet feeling fresh when we’re on our feet all day, and the shoe’s modern aesthetic receives compliments when we wear it casually. The combination of protection and plushness means we’re comfortable walking city blocks or standing for hours without the usual midfoot or forefoot aches that can come from less supportive shoes.
The core purpose of the Men’s On Cloud 5 is to provide maximum impact protection while maintaining a light, responsive feel. On has engineered this shoe to absorb both vertical and horizontal forces so runners can enjoy protective cushioning without a heavy, clumsy shoe. The goal is a balanced package: soft landings, efficient forward motion, and a stable platform for various running paces and casual use.
- Cloudtec in Zero Gravity foam: This is the heart of the shoe’s cushioning system. The Cloudtec pods compress on impact, soaking up shock vertically and dissipating horizontal forces for a smoother landing. The Zero Gravity foam lends a lightweight, airy feel while still delivering reliable protection.
- Updated midsole with increased height: The slightly taller midsole provides added cushioning and a more comfortable ride over longer distances. We notice better shock attenuation and a plusher underfoot feeling compared to previous iterations.
- Closed channel forefoot: This design element increases stability in the forefoot area, keeping transitions smooth and predictable. It helps the shoe feel less noisy and more unified underfoot during toe-off.
- Cloud 5 Speedboard: The updated Speedboard is tuned to transfer stored energy from the compressed foam into forward propulsion. We feel this most during faster efforts and surges—there’s a perceptible springiness that aids cadence.
When we run in the Cloud 5, the elements feel cohesive. The Cloudtec pods cushion impact, the Zero Gravity foam prevents the shoe from becoming heavy, and the Speedboard channels that energy forward. The midsole increase gives us a more forgiving ride, and the closed channel forefoot keeps transitions controlled. The net effect is a shoe that’s protective yet lively—capable of easy recovery runs, sharp tempo sessions, and long days on our feet.
From the upper to the sole, the Cloud 5 shows thoughtful construction. The engineered mesh upper is breathable and conforms well to the foot without hot spots. Stitching and glue lines are neat, and the overlays reinforce places that typically see wear, like the toe box and lace row. The outsole uses durable rubber in high-wear zones while keeping the overall weight down with strategically placed cutouts—this preserves the signature Cloud aesthetic while ensuring longevity.
We’ve put a decent amount of mileage on pairs of Cloud 5, and they hold up well. The Zero Gravity foam retains resiliency longer than some softer foams we’ve tested; it doesn’t flatten out quickly even with regular use. The Cloudtec pods show minimal compression after several dozen runs, and the outsole wear patterns are predictable—grip and rubber thickness in key areas help the shoe last through typical training cycles. That said, if you’re smashing high-mileage weeks on abrasive surfaces, you’ll eventually see the usual midsole breakdown present in any foam-based trainer over many miles.
Across different runs—from short pickups to long steady efforts—the Cloud 5 remains consistent. Cushioning performance doesn’t suddenly change as the miles rack up, and the Speedboard continues to give that subtle propulsive feel. We appreciate the balance between plush and responsive that doesn’t swing too soft or too stiff depending on pace, which makes the shoe a dependable daily trainer for a range of intensities.
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Lightweight construction: The shoe feels airy and doesn’t tax us over long runs.
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Excellent impact protection: Thanks to Cloudtec and Zero Gravity foam, landings are noticeably softer.
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Propulsive Speedboard: The Cloud 5 Speedboard aids forward momentum, helping maintain cadence and efficiency.
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Stable yet cushioned midsole: Increased height in the midsole plus the closed channel forefoot provides stability without sacrificing comfort.
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Versatile usage: Great for road runs, treadmill sessions, tempo workouts, and all-day wear.
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Comfortable upper: Breathable mesh and secure lockdown with a forgiving toe box.
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Durability: Midsole and outsole materials resist early breakdown better than some ultra-soft foams we’ve used.
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Slightly higher price point than basic trainers, which might deter budget-minded runners.
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Not the best choice for heavy trail use—grip and protection are optimized for road and light, smooth trails.
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The propulsive feel may take some getting used to for runners who prefer a flat, neutral, or completely natural shoe feel.
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If you prefer very wide fits, the shoe may still feel moderately snug in the midfoot despite a decent toe box.
We’d recommend the Men’s On Cloud 5 to runners seeking a modern, cushioned daily trainer that’s lightweight and lively. It’s ideal if you appreciate technology-forward design, want a shoe that helps with efficiency, and enjoy a comfortable, slightly elevated ride. If you’re exclusively a trail runner who needs aggressive traction and rock-plate-level protection, or if you have very wide feet that require maximal volume, you might prefer alternatives specifically built for those needs.
We find the Cloud 5 to be one of those shoes that quickly becomes a go-to in our rotation: it’s comfortable for long days, competent for faster sessions, and stylish enough for daily life. If your goals include balanced cushioning, energy-returning tech, and a dependable daily trainer, the On Cloud 5 deserves a strong look.
Merrell Siren Edge 3 Women’s Shoes
We see the Merrell Siren Edge 3 as a dedicated women’s hiking shoe built for day hikes, light backpacking, and rugged trail walks where nimble performance and comfort matter. Designed specifically for a woman’s foot, they strike a balance between the stability of a hiking boot and the agility of a trail runner. That makes them ideal for:
- Daily trail miles on uneven terrain
- Fast hikes and approach walks
- Wet-weather treks where grip matters
- Hikers who prefer a low-profile shoe over a bulky boot
On rocky switchbacks, muddy paths, and forest trails with roots and loose scree, the Siren Edge 3 consistently performs. We find them especially useful when we want a shoe that is supportive across varied conditions without the weight or stiffness of a full boot. The 3.5mm lug depth and Vibram TC5+ outsole are the features we rely on when traction is non-negotiable.
What initially draws us to the Merrell Siren Edge 3 is the way it fits. The shoe is built around a Kinetic Fit TRI insole, which is contoured to match the shape of a woman’s foot and provides triple zone arch support. Right out of the box it feels snug in all the right places—secure through the midfoot, roomy enough in the toe box, and comfortable around the heel. The plush tongue and collar add a little extra padding that reduces hot spots and rubbing on longer outings.
We value the combination of features that work together to protect our feet over long miles. The Merrell air cushion in the heel absorbs impact, while the molded nylon arch shank gives torsional rigidity—so we get both cushioning and structural support. Whether we’re descending a steep trail or traversing uneven rock steps, the Siren Edge 3 keeps our foot aligned and minimizes fatigue.
The upper pairs breathable mesh with a 3D-printed TPU upper, giving us ventilation without sacrificing durability. On warmer days our feet cool down quickly, and on damp trails the breathable lining helps moisture manage itself better than heavier leather options. At the same time, the TPU reinforcements hold up to trail abrasion so the shoe ages gracefully.
Out on slick roots or wet rock, the Vibram TC5+ high-performance rubber outsole provides confident footing. The lug pattern and compound feel tuned for mixed terrain; the 3.5mm lug depth is a sweet spot for grip without packing too much mud. We get predictable traction whether we’re on loose gravel or hard-packed soil.
The primary purpose of the Merrell Siren Edge 3 is to be a versatile, dependable trail shoe for women who need a blend of comfort, support, and traction without the weight of a full hiking boot. It’s designed for active hikers and trail walkers who want a low-cut shoe that still delivers the features necessary for technical sections.
- Vegan-friendly construction — great for those who prefer non-animal materials
- Designed for a woman’s foot — anatomical fit that supports female biomechanics
- Breathable mesh and 3D-printed TPU upper — balance of ventilation and durability
- Plush tongue and collar — enhanced comfort and reduced pressure from laces
- Lace-up closure with heel pull tab — secure fit and easy on/off
- Breathable mesh lining — moisture management and airflow
- Kinetic Fit TRI insole — contoured footbed with triple zone arch support
- Merrell air cushion in the heel — impact absorption for smoother landings
- Molded nylon arch shank — structural support and torsional stability
- Vibram TC5+ high-performance rubber outsole — superior traction and lasting durability
- 3.5mm lug depth — optimized grip for mixed terrain
Merrell’s use of a vegan-friendly construction means the Siren Edge 3 avoids leather while still offering toughness and longevity. The synthetic materials are easier to clean and tend to dry faster. For hikers who are mindful of animal-derived products, this is a meaningful feature without compromising performance.
We judge the Siren Edge 3 as solidly built. The stitching, the bonding between the upper and the sole, and the finishing around the heel and toe are all clean and consistent. The 3D-printed TPU overlays are placed purposely at high-wear zones which helps protect the mesh without adding unnecessary weight. Over multiple hikes, we notice no premature seams separating or foam breaking down—signs that Merrell didn’t cut corners on assembly.
The midsole offers a pleasant ride that is firm enough for stability but cushioned enough for comfort. The Merrell air cushion in the heel is subtle yet effective; it reduces the jarring feel on rock-strewn descents and gives our steps a little more resilience. The Kinetic Fit TRI footbed remains supportive even after extended use, and the molded nylon arch shank keeps the platform stable under lateral stress.
The Vibram TC5+ compound is known for durability, and we find no excessive wear after dozens of miles. The lug pattern remains intact and continues to bite into varied surfaces. If you frequently hike through abrasive rock or carry heavy loads, the outsole will show wear—like any shoe—but it holds up comparably well to other shoes in this class.
We’re consistently impressed by how the Siren Edge 3 handles variability—mud, gravel, wet rock, and dry singletrack. The outsole gives reliable purchase, the upper breathes when temperatures rise, and the overall fit prevents slippage and blisters. For wet roots and slick surfaces, the Vibram outsole and lug depth provide confidence. For longer days, the support and cushioning help reduce fatigue.
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Excellent anatomical fit for women — designed to support female foot shape for comfort and stability.
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Vegan-friendly construction — appeals to users avoiding animal materials.
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Kinetic Fit TRI with triple zone arch support — provides targeted support and reduces foot fatigue.
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Merrell air cushion in the heel — effective shock absorption on descents.
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Vibram TC5+ outsole with 3.5mm lug depth — dependable traction and durability across mixed terrain.
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Breathable mesh and 3D-printed TPU upper — a balance of ventilation and protection.
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Lightweight compared to traditional hiking boots — easier on our legs for fast hikes.
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Plush tongue and collar — enhances comfort and prevents lace pressure.
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Slightly less ankle protection than a mid or high-cut boot — not ideal for very heavy loads or extended backpacking with technical terrain.
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The synthetic upper, while durable and breathable, may not repel deep saturation as well as treated leather for prolonged wet use.
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Some hikers who prefer maximal cushioning or a rock plate may find the sole too minimalist for very rugged terrain.
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Sizing can vary by individual foot shape; we recommend trying them on with your typical hiking socks to ensure the right fit.
We think the Siren Edge 3 is a great pick for hikers who value a nimble, supportive shoe designed for women. If your typical outings are day hikes, moderate backpacking trips, or technical day approaches, these will serve you well. If you need robust ankle protection or are planning long, multi-day trips with heavy packs, you might prefer a higher-cut boot with more cushioning or a dedicated backpacking platform.
We enjoy recommending the Merrell Siren Edge 3 for the many hikers who need a well-balanced trail shoe that marries comfort, support, and rugged traction. It’s a thoughtfully constructed option that excels on the mixed terrain most of us encounter on regular hikes, and it’s tailored to female feet in ways that matter for long-term comfort. If your trails range from packed dirt to rocky singletrack and you want a shoe that breathes, supports, and grips, this shoe deserves serious consideration.
Comparison: On Men’s Cloud 5 vs Merrell Women’s Siren Edge 3
At a glance
We see two very different shoes designed for different purposes. The On Men’s Cloud 5 is a lightweight, road-oriented running shoe built around Cloudtec in Zero Gravity foam and a Speedboard to deliver soft landings with forward propulsion. The Merrell Women’s Siren Edge 3 is a trail/hiking shoe with a women-specific fit, sturdy support features (molded arch shank, Merrell air cushion) and a Vibram TC5+ outsole for durable traction on uneven terrain. Choosing between them depends on whether we want speed and cushioning for runs or protection and grip for trails.
Key specification differences (explained)
- Intended use: The Cloud 5 is optimized for running and fast road workouts; the Siren Edge 3 is built for trails and day hikes where traction and protection matter more than minimal weight.
- Gender-specific fit: Cloud 5 is a men’s model (men’s last), while Siren Edge 3 is designed specifically for a woman’s foot profile—important for sizing and fit comfort.
- Cushioning tech: Cloud 5 uses Cloudtec in Zero Gravity foam plus an updated Speedboard to absorb impact and propel us forward. Siren Edge 3 combines a Kinetic Fit TRI contoured insole with a Merrell air cushion in the heel for shock absorption and triple-zone arch support.
- Stability and support: Cloud 5 gains stability from an increased midsole height and a closed-channel forefoot; Siren Edge 3 adds structure with a molded nylon arch shank and triple-zone arch support—better for uneven ground and longer wear.
- Outsole and traction: Cloud 5 uses On’s Cloudtec-based outsole design (softer, road-oriented grip). Siren Edge 3 uses Vibram TC5+ rubber with 3.5 mm lugs for durable, high-traction performance on trails.
- Materials and breathability: Both use breathable mesh uppers, but Siren Edge 3 also highlights a 3D-printed TPU upper for added structure and is vegan-friendly.
- Durability: For rugged trails and long-term wear, the Merrell’s Vibram outsole and protective construction will generally outlast the road-focused Cloud 5 outsole.
- Weight: Cloud 5 is lightweight and “race-ready”; Siren Edge 3 is heavier (trail-weight) with more protective elements—comfort over speed.
Visualization table
| Specification | On Men’s Cloud 5 | Merrell Women’s Siren Edge 3 |
|---|---|---|
| Intended use | Road running, daily runs, speedwork | Trail running / hiking, technical or mixed trails |
| Gender / Fit | Men’s-specific last | Women’s-specific last |
| Upper material | Breathable mesh (lightweight) | Breathable mesh with 3D-printed TPU overlays |
| Midsole technology | Cloudtec in Zero Gravity foam; increased midsole height; closed-channel forefoot | Cushioned midsole with molded nylon arch shank |
| Cushioning feel | Soft landings with propulsive Speedboard | Plush, stable cushioning with heel air cushion and tri-zone arch support |
| Propulsion / energy return | Speedboard designed to propel forward | More stability-focused; less emphasis on propulsion |
| Insole | Standard/updated Speedboard integration | Kinetic Fit TRI contoured insole (triple-zone arch support) |
| Heel support / shock absorption | Cloudtec impact absorption | Merrell air cushion in heel for shock absorption |
| Outsole | Cloudtec-style pods / road-oriented grip | Vibram TC5+ high-performance rubber |
| Traction / lug depth | Road/grippy rubber, not aggressive lugs | Aggressive trail traction, 3.5 mm lug depth |
| Durability | Good for road use; moderate for light trails | High—built for trail abrasion and long-term use |
| Breathability | High (lightweight mesh) | High (breathable mesh lining) |
| Vegan-friendly | Not specified | Yes (vegan-friendly construction) |
| Best for | Fast road miles, daily training, tempo runs | Day hikes, trail runs, wet/muddy or uneven terrain |
Quick recommendation
If we want a lightweight, responsive shoe for road running and speed, the On Cloud 5 is the better pick. If our priorities are traction, protection, and a women-specific fit for trails or long days on our feet, the Merrell Siren Edge 3 is the stronger choice.
Conclusion
We’ve reviewed both the On Men’s Cloud 5 and the Merrell Women’s Siren Edge 3, and here’s our concise takeaways to help you pick the right shoe for your needs.
On Men’s Cloud 5 — Summary & Drawbacks
- Summary: The Cloud 5 is lightweight, stylish, and delivers the signature CloudTec cushioning that feels responsive and airy. It’s a great pick for daily wear, commuting, and light runs where comfort and a sleek look matter.
- Drawbacks: The fit runs a bit narrow for some people, durability can be limited on rough surfaces or heavy daily mileage, and it doesn’t provide the stability or aggressive traction needed for trails or heavy pronation.
Merrell Women’s Siren Edge 3 — Summary & Drawbacks
- Summary: The Siren Edge 3 is a capable hiking/approach shoe built for trails and variable conditions. It offers good support, traction, and durability for light- to moderate-duty hiking and outdoor activities.
- Drawbacks: It’s heavier and less flexible than a road shoe, offers a firmer ride (not designed for speed or long road runs), and may require a short break-in period. It’s also bulkier and more rugged in style compared with athletic sneakers.
Who We Recommend Each For
- On Men’s Cloud 5: We recommend these for commuters, casual runners, and anyone who values lightweight cushioning, breathability, and a modern city-ready look. Choose them if you mostly run or walk on pavement and don’t need aggressive support or trail traction.
- Merrell Women’s Siren Edge 3: We recommend these for hikers, walkers, and outdoor enthusiasts who need dependable traction, protection, and a supportive fit on trails and mixed terrain. Choose them if you spend time on dirt, gravel, or wet surfaces and prioritize stability over road-running performance.
Final Recommendation
If your primary activities are city life, commuting, and light road runs, we’d pick the On Cloud 5 for its comfort and responsive everyday feel. If you’re heading into the outdoors, tackling trails, or need extra grip and protection, we’d choose the Merrell Siren Edge 3. Ultimately, it comes down to intended use: urban comfort and style versus trail-ready durability and support.
We hope this helps you decide — let us know what activities you plan to use them for, and we’ll help narrow the choice further.
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