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On Cloudmonster 1 - Ivory | Glacier 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 - Ivory | Glacier CloudTec Cushioning for Every Mile

CloudTec Cushioning for Every Mile

Hollow CloudTec pods compress on landing and spring back at toe-off, delivering a lively, cushioned feel whether you are running five miles or standing on your feet all day.

On Cloudmonster 1 - Ivory | Glacier Speedboard Energy Return

Speedboard Energy Return

The Speedboard plate sits beneath the midsole to guide forward propulsion and add a subtle spring to each stride, keeping your natural gait efficient without forcing it.

On Cloudmonster 1 - Ivory | Glacier Clean Aesthetic, Hidden Eyelets

Clean Aesthetic, Hidden Eyelets

Hidden eyelets on the Ivory upper create a smooth, uninterrupted lacing surface that looks refined on the road and holds its appearance after repeated use.

Product story

Built for the Long Haul, Styled for the Long Day

The Cloudmonster 1 in Ivory | Glacier was designed for the runner who logs serious miles without sacrificing how their shoes look doing it. The muted Ivory base reads almost architectural, while the Glacier accent adds a cool blue-grey undertone that shifts subtly in different light. Together they create a colorway that feels intentional rather than loud, earning a place in both a training rotation and a weekend wardrobe.

Under that clean exterior, the Cloudmonster 1 is doing real work. Its CloudTec cushioning system uses hollow pods across the full length of the outsole that compress under your body weight and rebound as you push off, delivering a springy, energy-return sensation that flatters any pace. The Speedboard plate underneath channels that energy forward, and Helion foam absorbs impact without ever feeling slow or spongy.

This shoe earns its keep on long recovery runs, extended city walks, and days when you are on your feet from morning through evening. The rubber outsole grips confidently on dry pavement and light wet surfaces, and the rocker geometry rolls your foot naturally through each step, reducing fatigue over time. Hidden eyelets keep the lacing surface smooth and uncluttered, which also makes the Ivory upper easier to keep looking clean.

The Cloudmonster 1 suits runners who want maximum cushioning without the bulk of a traditional maximalist shoe, and anyone who values a silhouette that moves between athletic and everyday contexts without a wardrobe change. If you tend to run long and commute hard, or simply prefer a shoe that cushions honestly and looks good doing it, the Ivory | Glacier is the colorway worth reaching for.

Series

Cloudmonster 1

Fit note

True to size

Product FAQ

Details before you decide.

Everything you want to know about fit, feel, and the Cloudmonster 1 in Ivory | Glacier before you buy.

Runner notes

Why this pair keeps getting picked.

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

The cushioning is genuinely different

I have tried most of the max-cushion options out there and the Cloudmonster 1 is the first one where I can feel the pods actually doing something on each step rather than just sitting on a slab of foam. The Ivory | Glacier colorway is exactly as clean in person as in the photos. I wear these for my lunch runs and then straight into meetings without changing.

Danielle Okafor

Daily runner, Portland OR

Held up through 500 miles of base building

These were my high-mileage training shoe for a spring marathon build and they still feel like themselves after a lot of work. The Speedboard does what On says it does, and the rocker makes the last few miles of a long run noticeably less punishing on my knees. The Glacier accent looks great and still looks great after months of Chicago roads.

Marcus Tremblay

Marathon trainer, Chicago IL

On my feet twelve hours and my legs still work

I started wearing the Cloudmonster 1 for twelve-hour hospital shifts after a colleague recommended them. The CloudTec cushioning makes standing and walking on hard floors much less draining than the clogs I wore for years. The Ivory color is practical because I can wipe them down easily at the end of a shift.

Renata Espinoza

Registered nurse, Houston TX

Great support for a bigger runner coming back

I am 240 pounds and coming back from a stress fracture, so I needed something that would cushion without collapsing. The Cloudmonster 1 handles my weight without bottoming out, which was my worry with some lighter maximalist shoes. The fit through the midfoot is snug enough that I feel held rather than just padded. Docking one star only because the toe box is slightly tighter than I expected at first, though it did break in.

James Whitfield

Heavier runner returning from injury, Nashville TN

Goes everywhere I go

I wore these from a six AM treadmill session to a full day of client visits and nobody looked at my feet twice because the Ivory | Glacier is that clean a colorway. The hidden eyelets are a nice detail, the lacing surface stays smooth and does not catch on anything in a bag. Comfortable enough all day that I forget I am wearing running shoes.

Priya Sundaram

Gym and commute runner, San Francisco CA

Finally a cushioned shoe that does not feel marshmallowy

I kept bouncing between cushioned shoes that felt too soft and responsive shoes that beat up my feet on long runs. The Cloudmonster 1 is somewhere in between in the best way, springy and cushioned without being vague underfoot. I ran a half PR in these and have worn them on every long run since. The Ivory | Glacier looks sharp in race photos too.

Olivia Hartmann

Half-marathon runner, Minneapolis MN

Bought for running, use them for everything

I bought these specifically for weekend long runs but the cushioning is so good on city sidewalks that I ended up wearing them daily. The Helion foam feels consistent after six months, it has not compressed out or gotten that dead feeling some foam midsoles get. Easy to wipe clean after muddy park walks too.

Kevin Abramowitz

Weekend runner and dog walker, Austin TX

Easing back in with the right shoe

I started running again after having my second child and my joints needed more protection than they used to. The Cloudmonster 1 gave me the confidence to add miles back gradually because the landing feel is so forgiving. The Ivory | Glacier is a colorway I would have picked anyway, so the fact that it also happens to be the most comfortable shoe I have ever owned is a bonus. Giving four stars only because sizing ran slightly large for me personally.

Tamara Nguyen

Postpartum runner, Denver CO