Cotton, Polyamide, Elastane Imported Machine Wash No Show Invisible: Easy to match different kinds of shoes, such as sneakers, oxford, running shoes, casual shoes, training shoes, athletic sports shoes, and business shoes. Not for very low cut shoes. No Slip: Crafts: High Knitting Technology. 3 Silicone Strips at Heel. Don't slide off. High quality: Made of breathable material, keeps your feet dry. Moisture management, Cushioned foot. Easy to wash - machine wash or hand wash, do not bleach. Best Gift Choice: With good elasticity, Suitable for women and girls and Mens for no show socks.