This Hamburger Rattle Socks & French Fry Teether Set makes the perfect gift for baby. Rattle socks have a soft, stretchable fit that stays on baby's little feet and feature non-slip gripper on bottom. Machine wash cold, tumble dry low. Cotton Blend 0 - 12 months The baby teether is soft and flexible and can be chilled for extra soothing comfort. The texture is perfect for baby's sensitive gums. It is made of Food Grade Silicone. Non-Toxic: BPA, PVC and Phthalates Free. Clean teether thoroughly before first use in hot. soapy water or dishwasher (top rack only).