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On Cloudmonster Void - Alloy | 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 Void - Alloy | Black CloudTec Cushioning for Max Impact Absorption

CloudTec Cushioning for Max Impact Absorption

The same iconic cushioning pods found across the Cloudmonster line compress on landing and rebound with each stride, giving you plush underfoot feel without sacrificing responsiveness.

On Cloudmonster Void - Alloy | Black Speedboard for Stability and Roll

Speedboard for Stability and Roll

A Speedboard runs through the midsole to provide enhanced stability and guide your foot through a natural forward roll, making each step feel controlled and efficient.

On Cloudmonster Void - Alloy | Black Haptic Mesh Upper, Built to Breathe

Haptic Mesh Upper, Built to Breathe

The lightweight haptic mesh keeps the Cloudmonster Void breathable and comfortable across long days, while TPU eyelet stays and minimalist branding deliver a clean, refined finish.

Product story

Built to Absorb. Designed to Last the Day.

The Cloudmonster Void in Alloy | Black exists at an interesting intersection: the maximalist cushioning platform that made the On Cloudmonster famous, now channeled into a shoe that works just as well during a recovery jog as it does on a full Saturday out in the city. The cool alloy and black palette is deliberately understated, giving you a shoe that pairs with almost anything without drawing attention to itself.

Under the foot, the Cloudmonster Void carries the same iconic CloudTec cushioning as the rest of the Cloudmonster family. Those hollow cushioning pods compress on landing to absorb impact, then spring back to return energy, while the Speedboard sits through the midsole to enhance stability and encourage a smoother forward roll from heel to toe. It is a running platform that does serious work without asking you to think about it.

Above the cushioning stack, the haptic mesh upper keeps weight low and airflow moving, so longer wear sessions do not turn into an endurance test for your feet. The perforated microfiber tongue adds a layer of fine-detail craftsmanship that feels intentional, and the TPU eyelet stays give the lacing a precise, almost architectural quality that suits the stealth finish of the alloy and black color scheme. Rubber outsole pads anchor the whole package with grip across pavement, light trail crossings, and gym floors.

The Cloudmonster Void is for the runner who wants maximum cushioning without sacrificing how the shoe looks off the road. It suits daily trainers building weekly mileage, people on their feet for long shifts, and anyone who is done choosing between comfort and a shoe they actually want to wear. The Alloy | Black colorway makes that case quietly and confidently.

Series

Cloudmonster Void

Fit note

True to size

Product FAQ

Details before you decide.

Everything you need to know before you order the Cloudmonster Void in Alloy | Black.

Runner notes

Why this pair keeps getting picked.

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

Finally a max-cushion shoe I can wear all day

I have been running in the Cloudmonster line for a couple of years and the Void might be my favorite version yet. The alloy and black colorway is clean enough to go from a morning run straight to the office without looking out of place. Cushioning is as good as I expected, soft on landing with enough energy return to keep things interesting. No blisters after 50-plus miles in them.

Marcus Delgado

Daily runner, Austin TX

Twelve-hour shifts are a different experience now

I spend most of my working day on hard floors, so cushioning is non-negotiable. The Cloudmonster Void handles it better than any shoe I have tried. The breathable mesh keeps my feet comfortable late into a shift when sweat and fatigue usually become a problem. The alloy color goes with my scrubs surprisingly well and still looks sharp after several months of heavy use.

Jennifer Okafor

Hospital nurse, Chicago IL

My go-to recovery day shoe

I use the Cloudmonster Void specifically for easy and recovery runs between harder sessions. The CloudTec cushioning absorbs the pounding my legs are already dealing with from speed work and long runs, and the Speedboard keeps my stride from getting sloppy when I am tired. The stealth black and alloy colorway just looks right without trying too hard.

Thomas Wren

Marathoner in training, Portland OR

Versatile enough for running and the rest of my day

I run three or four times a week and then basically live in my running shoes the rest of the time, so I needed something that does both well. The Cloudmonster Void is exactly that. The alloy and black color scheme makes it easy to pair with almost any outfit, and the cushioning means my feet are not destroyed by end of day. The minimalist branding is a nice touch.

Priya Nambiar

Casual runner and commuter, Seattle WA

Real cushioning for a bigger frame

At 240 pounds I have burned through a lot of shoes that advertise cushioning but do not deliver once there is real weight behind each step. The Cloudmonster Void actually holds up. The CloudTec pods do their job on longer runs and the rubber outsole gives me confidence on wet pavement. Two months in and the midsole still feels close to fresh.

Derek Fountain

Heavier runner, Nashville TN

Helped me ease back into running comfortably

My physical therapist suggested a max-cushion shoe while I rebuilt mileage after a knee injury, and the Cloudmonster Void has been a safe, comfortable choice. The cushioning takes a lot of stress off my joints and the Speedboard keeps my gait stable when I start to tire. I gave it four stars only because the toe box is a touch snug for me personally, but overall this shoe has been a big part of my recovery.

Allison Cates

Returning from knee injury, Denver CO

Looks as good as it performs

I run mostly in the city and at the gym, so I wanted something that handles the variety of surfaces and also does not look ridiculous on the subway. The Alloy | Black Cloudmonster Void checks all those boxes. The haptic mesh is surprisingly easy to keep clean and the cushioning on concrete is noticeably better than my previous shoes. Highly recommend if you want a shoe that works in multiple environments.

Samuel Briggs

Gym and city runner, New York NY

Comfortable from mile one to mile thirteen

I used the Cloudmonster Void for my last two half marathon training cycles and it held up across the full distance without any hot spots or discomfort. The CloudTec cushioning is particularly noticeable on longer efforts where foot fatigue usually sets in around mile nine or ten for me. The perforated tongue detail is a small thing but it signals that On put real care into every part of this shoe.

Gloria Marchetti

Half-marathon runner, Philadelphia PA