SIZE CHART - S : Women Shoe 6-8 / M : Women 8-10 or Men 7-9 / L : Women 10-12 or Men 9-11 PAIN-REDUCING SOCKS : Cushion padded on right place and arch support reduces blister and fatigue. ALLROUND SPORTS SOCKS : sole cushion + instep mesh - absorbs sweat and shock and moisture wicking. GOOD WHEN : Tennis, Workout, Squash, Running, Basketball, Relax or when tired of socks sliding down. NATURAL YARN FOR YOUR SKIN : Cotton is best choice If acrylic-type or nylon socks are not for you. 50 years of craftsmanship - Pro Mountain Socks.