Get ready for supreme cushioning and premium comfort – plus, our plushest ever tongue. It’s time to run beyond. No matter what your next running goal is, get ready to soar to new heights. The Cloudflyer 4 gives you supreme cushioning plus premium comfort – including On's plushest ever tongue. With bigger, dual-density CloudTec®, you'll feel supported as you run beyond pain, beyond doubt, and beyond your goals. This shoe contains 90-95% recycled polyester, with a total recycled content of 35-40%. Every shoe, every time – On will never stop pushing to go beyond what’s possible when it comes to plant-friendly materials with premium quality. A new molded sock-liner and external heel counter keep your foot as secure as it gets – no matter the distance. Plus a re-engineered mesh improves breathability and durability for serious comfort. Strap in. Take off. It’s time to run further and faster than ever.