95% Cotton 5% Nylon SIZE: 2 Size -??US 5-7.5 ???US 8-10.5 ?. It’s stretchy enough to fit most women. MATERIAL – Top layer:80% Nylon 20% Spandex; Bottom:95% cotton 5% Nylon; High quality material: they are ultra-soft and smooth. Invisible socks with super soft comfort feeling with great ability to soak up sweat. Keep dry all day. Unique Design – No show liner socks with a circle of silicone grip technology to prevent slipping in shoe. No show socks enhance the durability, comfortability, sweat-wicking, deodorization and breathability. 100% NO SHOW – AINIAILU no show liners stop pretty close to the toe line, just covering the end of your toes.Elastic comfortable socks perfect for ballet shoes, pumps, high-heel shoe, sneakers, Flat shoe, Boat Shoes, Loafers, ect. 30 DAYS FREE RETURN – Satisfaction Guaranteed! If not, we shall send a free replacement or issue a full refund. For free customer service, please contact us by email.