Worn once. Breathable, lightweight upper has a comfortable, sock-like feel with a 7/8-length inner sleeve and provides easy entry Nike Free technology in the forefoot creates flexibility for agility moves like burpees, planks and sprints Wide internal webbing distributes pressure around your midfoot for a comfortable yet secure feel during sudden stops and quick cuts Plush foam around the collar provides comfort and support around your ankle Stretch around the collar lets your foot move naturally as you burst, cut and brake Molded heel clip offers support Webbing eyelets offer dynamic containment