Product Details The cult-worthy socks label knits their signature Run Tab St socks in their Infiknit performance mesh for engineered arch support and a seamless toe design. Punctuated with reflected logos, this lightly cushioned pair is cut for an ankle-barring design that will work as hard as you do. Fabric: 66% nylon, 24% polyester, 6% combed cotton, 4% elastane Machine wash Imported Vendor Sizing: Size S fits US Shoe Size 5-7.5 Size M fits US Shoe Size 8-10.5 Please note: This item was pre-shot and written from a sample. Details including fabric, construction, and measurement are subject to slight variations from the pictured item.