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On Cloudmonster 61 - Ivory | Pearl 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 61 - Ivory | Pearl Helion Superfoam Landing Absorption

Helion Superfoam Landing Absorption

Helion superfoam compresses on impact to absorb shock, then rebounds quickly to put energy back into your next stride. It stays responsive across a wide range of temperatures, making it reliable for both summer track sessions and cooler morning runs.

On Cloudmonster 61 - Ivory | Pearl Speedboard for Snappy Energy Return

Speedboard for Snappy Energy Return

The embedded Speedboard propulsion plate amplifies the rebound from Helion foam, giving the Cloudmonster 61 a snap at toe-off that most max-cushion shoes sacrifice for softness. The result is a ride that feels both protected and propulsive.

On Cloudmonster 61 - Ivory | Pearl Rocker Shape for Effortless Forward Roll

Rocker Shape for Effortless Forward Roll

The Cloudmonster 61's engineered rocker geometry guides the foot from landing through toe-off without requiring the runner to muscle through a thick stack of foam. It creates a smooth, natural forward momentum that reduces fatigue over long distances.

Product story

The Monster Ride, a Lighter Side

The Cloudmonster 61 in Ivory and Pearl is a deliberate departure from the darker, high-contrast colorways that define much of the Cloudmonster line. This neutral, almost luminous palette suits runners who want the shoe to feel as clean as the ride itself, whether that is an early morning long run or a casual day on the road. It pairs easily with training kit without asking for attention, which makes it one of the more wearable expressions of a shoe that is anything but subtle underfoot.

Beneath the soft engineered upper, On has packed in Helion superfoam, a proprietary compound engineered to absorb impact on landing while snapping back quickly to return energy with each toe-off. The Speedboard, a stiff propulsion plate embedded through the midsole, amplifies that rebound and keeps the transition from heel to forefoot feeling urgent and connected. Together these two systems make the Cloudmonster 61 feel faster than a shoe this cushioned has any right to feel.

The unique rocker geometry is the third pillar of what makes this shoe work. Rather than forcing a runner to do the work of rolling through a thick midsole, the Cloudmonster 61 uses its curved profile to guide the foot forward naturally, reducing the dead feeling that plagues less well-engineered max-cushion shoes. That rocker shape also makes it a genuinely comfortable option for runners dealing with heel or forefoot sensitivity, as it quietly manages ground contact without demanding anything extra from the runner.

The Cloudmonster 61 in Ivory and Pearl suits a wide range of men, from high-mileage marathon builders putting in weekly long runs to commuters and nurses who need their feet to feel good through a full shift. The soft sockliner and accommodating upper make it comfortable from the first wear, and the light, durable foam construction holds up across hundreds of miles without losing its signature bounce. If you have been waiting for a max-cushion On shoe that does not look like it is trying too hard, this colorway was made for you.

Series

Cloudmonster 61

Fit note

True to size

Product FAQ

Details before you decide.

Everything you want to know before you run in the Cloudmonster 61 Ivory and Pearl.

Runner notes

Why this pair keeps getting picked.

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

Best long-run shoe I have owned in years

I have put about 280 miles on these training for my fall marathon and the cushioning still feels close to new. The rocker geometry makes 18-mile efforts feel significantly less draining than my previous max-cushion shoes. The Ivory and Pearl colorway is low-key and pairs with everything, which I appreciate after years of wearing shoes that look like they belong in a nightclub.

Marcus Delgado

Marathon trainer, Denver, CO

Converted me to max-cushion running

I was skeptical that a heavily cushioned shoe could still feel connected to the road, but the Speedboard changes that equation completely. There is a real snap at toe-off that I did not expect from a shoe this soft. The Ivory Pearl color is clean and simple, exactly what I was looking for after my last pair of overly busy trainers.

James Whitfield

Recreational runner, Nashville, TN

Finally a shoe that holds up under my weight

At 235 pounds, I go through most running shoes in three to four months before the foam gives out. I am at five months on these Cloudmonster 61s and the bounce is still noticeably there. The landing absorption from the Helion foam genuinely reduces the knee soreness I used to feel on my longer weekend runs.

Kevin Okafor

Heavier runner, Charlotte, NC

Got me back on the road after plantar issues

My podiatrist suggested a maximum-cushion shoe with a rocker profile while I recovered from plantar fasciitis, and the Cloudmonster 61 checked every box. The forward-rolling geometry takes pressure off the heel on landing, which made the difference in being able to run again without pain. I chose the Ivory and Pearl specifically because it looks clean and I wanted something that felt like a fresh start.

Thomas Brennan

Returning from foot injury, Portland, OR

Wear these for 12-hour shifts, not just running

I started using these for my runs but ended up wearing them on the floor because the cushioning is so good for extended standing. After a full shift my feet feel noticeably better than they did in my previous nursing shoes. I took off one star only because the upper gets a little warm in the hospital environment, but for cushioning and support these are exceptional.

Daniel Nguyen

Hospital nurse and casual runner, San Jose, CA

The pearl tones look even better in person

I ordered these based on the photos but the subtle shimmer in the Pearl finish is something you only appreciate in natural light. The shoe itself is exactly what the Cloudmonster line promises: big cushioning, a fast feel, and a ride that makes you want to add miles. After 150 miles these still look remarkably clean because the lighter color hides road dust surprisingly well.

Robert Hutchins

Daily runner, Austin, TX

The rocker is a game changer for my form

I struggled with a heel-striking habit that tired out my calves early on long runs. The Cloudmonster 61's rocker geometry naturally encouraged a smoother transition and I noticed the difference within the first three miles. Two months in and I am running longer distances with less post-run soreness than I experienced with any other shoe I have tried.

Christopher Walton

Half marathon runner, Minneapolis, MN

Comfortable enough to wear all day, good enough to race in

I wear these for light gym sessions, errands, and my Saturday long runs, and they hold up well across all three. They are not the most locked-down shoe for speed work because of the soft foam, but for anything at an easy to moderate pace the energy return keeps the ride enjoyable. The Ivory and Pearl colorway works with casual clothes well enough that I do not feel like I am wearing running shoes everywhere I go.

Samuel Greer

Gym goer and weekend runner, Columbus, OH