A single vertical flex groove throughout the forefoot delivers a snappier toe-off experience

Rounded Heel provides better alignment

Light weight

reservoirs (the front pull cords double as drink tube locks)

Women's On Cloudflyer 4 (D) Wide Brand_Skirt Sports A single vertical flex grooveVersion 4 of the On Cloudflyer is here! Get ready for supreme cushioning and premium comfort plus, On's plushest ever tongue. Its time to run beyond. No matter what your next running goal is, get ready to soar to new heights. With bigger, dual density CloudTec, you'll feel supported as you run beyond pain, beyond doubt, and beyond your goals. On has upped their sustainability game: this shoe contains 90 95% recycled polyester, with a total recycled