8 Pack SIXDAYSOX Mens No Show Sock Size US Mens shoe 12-15 NIB High quality material: SIXDAYSOX mens no show socks are made of 75% cotton,22% Nylon, 3% spandex. Hand washing is recommended. No show and non slip: Low cut on the top makes your feet completely invisible in sneaker and some low cut style shoes. Anti-slip silicone in heel prevents socks from sliding down. Moisture wicking and breathable: Mesh knited on top makes it more breathable and quicker to dry. Size: US Shoe Size 5-8.Thinner design prevents sweaty feet. The men’s low cut thick cotton no show socks men are good matching for sports shoes and most of casual shoes, but not for all boat shoes and very low cut shoes. Attention: If the socks with quality problems or you do not like our socks for any reason in 30 days, we offer a full refund or free replacement.