These lightweight runners maximize comfort with a minimal, yet effective design. Perfect for tempo runs, warm conditions, and race-day endurance, they're made with zero cushioning for a barely there, second skin feel, along with a seamless toe and No-Shift Tech. Sweat-wicking performance yarns pull moisture away from the foot and a ventilated mesh knit promotes airflow in targeted hot spots, keeping your feet cool and dry where you need it the most. Design: Seamless Toe is linked with a special knit stitch that eliminates the annoying bump that runs across the toes of most socks A specialized knitting technique allows for more airflow in key areas This material absorbs moisture to help keep sweat from accumulating and weighing you down Ultra-thin construction with minimal cushioning. The next-best thing to wearing nothing at all All calf and knee-high socks are engineered with Stay-Up Technology: the perfect tension and elasticity to keep them exactly where you want them. Tight, but not too tight Designed to fit your foot like a glove-no shifting or bunching here Tested and proven to resist abrasion that leads to early wear and tear Honeycomb Arch: A supportive band designed to hug your mid-foot, thanks to a specialized yarn and knitting technique Additional Details 50% polyester 32% nylon 13% cotton (supima(R)) 5% elastane Machine wash cold on gentle cycle, Do not bleach, Tumble dry low, Do not Iron, Do not dry clean. Do not use faric softeners