Injinji Lightweight Micro Toe Socks - Boys' Grade School Give your feet a natural, second-skin comfort with the Injinji Lightweight Micro Toe Sock, an ultra-thin and lightweight sock that allows your toes to align and enjoy a natural splay. The unique five-toe sleeve design paired with a light, breathable moisture wicking fabric keeps your feet dry, cool, and protected from blisters. The micro length rests right at the ankle, and features a comfy dual welt band to hold the sock in place. 75% polyester/20% nylon/5% lycra. Imported.