Ultra-thin, lightweight construction for a barely there feel|Locked-in fit design keeps sock securely on heel for an adjustment free fit that won't fall down|Strategic mesh panels on top of foot for breathability|Material wicks sweat & dries really fast|Interior no-slip silicone grips on back of heel helps keep your socks from sliding down|Front comfort tab protects top of foot from lace bite & irritation|Odor control technology reduces odor in the sock|Seamless toe delivers superior comfort & reduced irritation