This truly versatile base layer liner treats high-grade polypropylene with Alphasan technology (natural, silver based antimicrobial treatment) to give you an odor free, blister resistant sock liner, minus the weight and bulk. They wick, breathe, reduce friction...and the synthetic yarn will simply not wear through. Made in the USA.

Content: 77% polypropylene, 17% nylon, 3% elastic, 3% lycra

Men's shoe sizes: Medium (5-8), Large (9-12), X-Large (13-15)

Women's shoe sizes: Small (4-7), Medium (8-11)