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On Cloudmonster 1 - Black | Black primary angle

On | Standards

Every Cloudmonster is engineered to On's highest standards - tested by athletes, certified for performance, and built to exceed your training goals.

Product details and quick facts

Cushioning

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Mid

Road running

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Responsive

Lacing

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Standard

Heel to toe drop

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6mm

Key features

On Cloudmonster 1 - Black | Black CloudTec Cushioning for All-Day Comfort

CloudTec Cushioning for All-Day Comfort

Hollow CloudTec pods compress on impact and rebound through toe-off, giving you cushioning that responds to your pace rather than fighting it.

On Cloudmonster 1 - Black | Black Speedboard Propulsion Through Every Stride

Speedboard Propulsion Through Every Stride

The Speedboard plate sits within the midsole and channels energy forward at push-off, so longer runs feel more efficient mile after mile.

On Cloudmonster 1 - Black | Black Clean Profile with Hidden Eyelets

Clean Profile with Hidden Eyelets

Hidden eyelets eliminate the visible lace anchor points along the forefoot, keeping the all-black upper looking seamless whether you're on the road or off it.

Product story

Built for the Distance, Designed for Every Day

The Cloudmonster 1 in Black | Black is the version of this shoe that disappears into your routine. There are no contrast panels, no color breaks, no visual noise. Just a clean, unified silhouette that moves from your first mile to your last errand without missing a beat.

Under the surface, On's CloudTec cushioning system does the work. Each hollow cushioning pod compresses on landing to absorb impact, then rebounds to push you forward. The Speedboard propulsion plate converts that stored energy into forward drive, and Helion foam cushions across the full stride so the ride stays soft without feeling slow.

This is the shoe for runners who log miles consistently rather than chasing race day. It suits long easy runs, recovery days, and the commuter who walks six blocks each way and wants one shoe that handles all of it. The rubber outsole provides grip on wet pavement, and the rocker geometry encourages a smooth heel-to-toe transition that reduces fatigue over time.

The all-black colorway makes the Cloudmonster 1 a natural fit for runners who prefer to keep their kit cohesive. Hidden eyelets reinforce the clean aesthetic so nothing breaks the line across the forefoot. Whether you wear all-black training gear or simply want a shoe that pairs with everything, this is the colorway that does not ask for attention.

Series

Cloudmonster 1

Fit note

True to size

Product FAQ

Details before you decide.

Everything you need to know before you add the Cloudmonster 1 Black | Black to your rotation.

Runner notes

Why this pair keeps getting picked.

Natural feedback shaped around the fit, colorway, and ride profile of this exact product.

The shoe I reach for every single morning

I have been running in the Cloudmonster 1 Black | Black for about four months now and I have put close to 400 miles on them. The CloudTec cushioning still feels responsive, and the all-black look holds up well even after regular cleaning. I run mostly easy aerobic miles and this shoe makes every one of them comfortable.

Marcus Webb

Daily runner, Portland, OR

Finally a shoe that works for both shifts and runs

I wear these on twelve-hour nursing shifts and then take them out for a 5-mile run on my days off. The Helion foam keeps my feet from aching on hard hospital floors, and the all-black colorway is required in our department so this was an easy choice. I was not expecting a running shoe to hold up this well to clinical use.

Theresa Kowalski

ER nurse and recreational runner, Chicago, IL

Perfect easy-day shoe in a marathon block

I rotate the Cloudmonster 1 into my training plan for recovery runs and long easy efforts, and it has been exactly what I needed. The rocker geometry keeps the turnover smooth when my legs are tired, and the cushioning does not feel dead after 15 miles the way some max trainers do. The black on black colorway pairs with everything in my kit.

David Osei

Marathon training, Atlanta, GA

Gentle enough for my comeback

My physio recommended a maximally cushioned shoe while I was rebuilding mileage after plantar fasciitis, and the Cloudmonster 1 has been the most comfortable option I tried. The rocker helps offload the heel during toe-off, and the foam provides the impact absorption I need right now. I am back up to 30 miles a week and my foot has been cooperating.

Linda Farquhar

Returning from plantar fasciitis, Denver, CO

Cushioning that actually holds up for a bigger runner

At 235 pounds I compress through most cushioned shoes faster than the reviews suggest I should. The Cloudmonster 1 has held its shape better than I expected after three months of use. The CloudTec pods still compress and rebound noticeably, and my knees feel better after runs than they did in my previous shoe. Solid build quality.

James Tran

Heavier runner, Houston, TX

Great everyday shoe, slightly stiff at first

I bought the Cloudmonster 1 for my commute runs across Manhattan and short gym sessions, and it handles both well. There was a break-in period of about 30 miles before the cushioning softened to where I wanted it, which knocked off a star for me. Once it loosened up though, the all-day comfort is genuinely impressive and the all-black look works with my commuter wardrobe.

Rachel Simmons

Gym and commute runner, New York, NY

Exactly what a training shoe should be

I use the Cloudmonster 1 for the bulk of my weekly mileage while my faster shoes stay reserved for tempo sessions and race day. The Speedboard gives it enough snap to not feel sluggish at moderate effort, and the Helion foam keeps the ride plush on downhills. The Black | Black colorway was my pick specifically because I wanted something that looked intentional rather than incidental.

Paul Nakamura

Half marathon runner, Seattle, WA

Goes the distance on long training days

I run ultras and spend a lot of time on my feet at moderate effort, which makes a shoe like this ideal for my weekly road mileage. The Cloudmonster 1 keeps my feet comfortable through runs that push past two hours without hot spots or excessive fatigue. The hidden eyelets are a small detail but they do eliminate the pressure points I sometimes get across the lace zone on very long outings.

Carla Bergstrom

Ultramarathon enthusiast, Salt Lake City, UT