Run on the smaller end Many have tried to create the perfect low-rise ankle sock that won't slip under your heel, all to no avail. None have innovated like Squid Socks. Our adult ankle sock not only has silicone dots on the inside, but also on the OUTSIDE of the heel. Our patent-pending "lock dot technology" prevents your socks from slipping, sliding, scrunching and most importantly, keeps them from rolling under your heel. Features: 1-pair  85% viscose made from bamboo, 12% nylon, 3% spandex 100% silicone dots on inside cuff  Patent-pending "lock dot technology" offers silicone dots on the OUTSIDE of the heel, working with the inside silicone to keep your sock in place and preventing the dreaded "rolling under your heel" issue Strong arch support. Think of it like a sports bra for your heel. Cushioned toe and heel for added comfort Silicone bottom grips help prevent slips and falls on hardwood floors/slippery surfaces Bottom compression patch at ball of foot Blister tab Moisture wicking & temperature regulatory properties Seamless toe Standard 100 by OEX-TEX Designs Included in Pack Single-pair black and gray space-dye