95% cotton/5% nylon? THIN & DURABLE MATERIAL: These sock liners are made of extra thin & durable material to ensure durability, comfortability and sweat-wicking. Bottom: 95% cotton/5% Nylon; Top layer: 85% Nylon/15% Spandex.? NON SLIP: Lightweight, breathable womens no show socks lined with 2 silicone circle ensure a no-slip fit while you work out your hardest. Holds socks in place for a worry free day.? COMFORTABLE & DRY: These low cut socks for women are designed to adapt to your temperature and activity to keep you cool and dry for all day comfort.? INVISIBLE: Extreme Low Cut to cover your toes and heel while hiding inside your favorite pair of heels for a casual, barefoot appearance.? LIGHTWEIGHT & SMOOTH: Perfect for flats, high heels, boat shoes, loafers,pumps, ballet shoes or sneakers.The Lifestyle Ultra Low no-show socks help you tackle whatever activity comes your way.