Helion™ is On’s proprietary superfoam, developed to bring together comfort, energy return and structural resilience in a single midsole material. Introduced in 2019, it was designed to overcome the compromises typically found in running shoe cushioning systems.
Helion™ is On’s proprietary superfoam, developed to bring together comfort, energy return and structural resilience in a single midsole material. Introduced in 2019, it was designed to overcome the compromises typically found in running shoe cushioning systems.
Traditional foams often force a choice between softness and support, or between responsiveness and long-term durability. Helion™ eliminates that trade-off. Its unique molecular structure combines rigid and flexible elements along the same polymer chains. This allows the foam to compress when cushioning is needed and rebound quickly when energy return is required.
The performance of Helion™ remains stable in a wide range of temperatures. Whether in cold winter mornings or hot summer road sessions, the foam resists hardening or softening, keeping your stride consistent and supported.
In On shoes, Helion™ often works alongside CloudTec® cushioning pods and the Speedboard® plate to form an integrated system. This combination enables soft landings, explosive toe-offs and a smoother overall ride. The foam also maintains its structural integrity over time, reducing compression set and helping shoes last longer both in comfort and performance.
Shoes with Helion™
Men | Training / Gym
Cloud X 3 AD
Designed for everything from pre-work jogs in Sandton to weekend missions around Braam, the Cloud X 3 AD delivers next-level versatility. With featherlight CloudTec® cushioning, a Speedboard® for springy transitions, and a sleek silhouette, this all-day trainer balances gym grind with everyday grind.
Women | Training / Gym
Cloud X 3 AD
From HIIT in Hyde Park to casual runs along the promenade, the Cloud X 3 AD gives you comfort, support, and effortless style. Lightweight, responsive, and breathable, it's your new go-to for workouts, walks, and the day in between.
Men | Training / Gym
Cloud X 4
Push your pace and power through circuits in the Cloud X 4, built for dynamic training and short runs on SA streets. With responsive Helion™ foam, a flexible X-shaped Speedboard®, and featherlight breathability from 100% recycled mesh, it's your all-in-one training partner.
Women | Training / Gym
Cloud X 4
From HIIT sessions in the studio to quick loops around the block, the Cloud X 4 delivers lightweight comfort and agile performance. With a sleek, breathable upper and eco-conscious design, it's made for South African women who move with purpose.
Women | Training / Gym
Cloud X 4 AD
Whether you're smashing circuits or heading to a café meetup, the Cloud X 4 AD combines agile support with breathable style. Built with sustainable materials and performance-ready cushioning, it's the ideal all-rounder for active South African days — gym to street.
Men | Training / Gym
Cloud X 4 AD
From HIIT in Sandton to casual errands in Stellenbosch, the Cloud X 4 AD delivers light, responsive performance wherever the day takes you. With CloudTec® cushioning, a fork-shaped Speedboard®, and a sleek recycled mesh upper, it's your go-anywhere training and lifestyle hybrid.
Men | Training / Gym
Cloud X Z5
Power through track drills or weight circuits with the On Cloud X Z5 — built for men who demand versatility. With explosive Helion™ cushioning, a responsive Speedboard®, and grippy outsole traction, it's your ultimate tool for high-tempo training and hybrid workouts.
Women | Training / Gym
Cloud X Z5
From early morning jogs to strength sessions in the studio, the Cloud X Z5 blends sleek comfort with everyday versatility. Lightweight, breathable, and cushioned with Helion™ foam, it moves effortlessly with you—no matter the activity.
Men | Running
Cloudeclipse
Crush long runs with comfort in the Cloudeclipse. On's max-cushioned road runner designed for big distances and bigger goals. Double-layer CloudTec Phase cushioning combines with Helion™ superfoam and a flexible Speedboard® to deliver a smooth, forward-rolling ride that keeps you going strong.
Women | Running
Cloudeclipse
From early morning routes in KZN to late evening jogs in the suburbs, the Cloudeclipse wraps your feet in plush, responsive comfort. With soft landings, lightweight Helion™ foam, and a breathable recycled upper, it's perfect for long-distance efforts or gentle recovery runs.
Men | Running
Cloudflow 3
The On Cloudflow 3 is your fast lane to PBs — combining Helion™ foam, CloudTec® cushioning and a responsive Speedboard® for high-performance road running. Whether you’re clocking tempo runs in Pretoria or racing the streets of Soweto, this shoe delivers precision, comfort, and speed. Get your pair of “Run On Shoes”
Women | Running
Cloudflow 3
For South African women who run fast and train harder, the On Cloudflow 3 brings lightweight power and sleek style. Featuring Helion™ superfoam and a propulsive Speedboard®, it's ideal for interval sessions, race days, and every stride in between. Run on shoes.