Baby Gear Boys Newborn 3 Packet Rattle Sock In Box-Sports Socks: 68% Cotton/24% Polyester/5% Polyamide/3% Elastane; Rattle Content: 100% Polyester Machine Wash Socks- 68 percentage cotton, 24 percentage polyester, 3 percentage elastane, 5 percentage polyamide, rattle content-100 percentage polyester with 100 percentage polyester fiberfill Comfort Cute design with rattle sound Machine wash cold, tumble dry low