'Enhance your fitness journey with the ON Cloud 4 XD. Best for running, training, and everything in between, these shoes feature a CloudTec Phase midsole structure that creates a silky-smooth underfoot experience and cushions your movements. The 100% recycled polyester mesh upper is lightweight and breathable, letting you surf through your day with sustainable comfort. The Speedboard design delivers better forefoot flexibility and helps you push off with power. Whether you're hitting the pavement or the gym, the ON Cloud 4 XD keeps you at the top of your game. From quick miles to gym sessions and everything in between, this versatile trainer is built to keep your stride light, smooth, and ready for more. The On Cloud 4 XD pairs cushioned comfort with a breathable feel, while a flexible Speedboard design helps create a more powerful push-off through every step. Size & Fit Guidance For the best fit, we recommend going with your usual size if you prefer a standard feel. Some wearers with wider feet note that a half-size up gives them a more comfortable fit while still keeping the shoe secure. Best For Best for running, gym workouts, and everyday training when you want lightweight comfort and a locked-in feel. Cushioning & Road Feel Wearers highlight the barely-there weight and smooth step-in feel, making this a strong choice for daily movement. The cushioned platform helps soften impact, while the grippy outsole supports confident traction across runs and training sessions."