Running Socks ULTRA SOFT AND COMFY -these performance ankle socks are ready to hit the trail! Perfect for running and hiking these socks offer 4 way stretch and quick drying fabric for all day comfort ACHILLES TAB -Protects your ankle and keeps the socks comfortably in place PERFECT CUSHIONING - Targeted cushioning on the ball and heel of the foot provide extra padding where you need it most! RECYCLED MATERIALS - Our running socks are made with REPREVE, a fabric that transforms recycled plastic bottles into performance gear TRAILHEADS DESIGN -our socks are printed in a topo pattern with Take The Trail Less Traveled across the bottom and the TrailHeads logo across the toe SIZING - Available in 2 sizes. S/M: women's shoe size 6-9; men 5-8. M/L: women 9.5-12; men 8.5-12. MATERIAL - 55% REPREVEA(R) recycled polyester, 30% cotton, 10% nylon 5% spandex