Tomy - 71271 - Momma - Covers Bottle Insulator - Minimum age: From birth Maximum Age: 3 years Dimensions: 12 x 12 cm x 3 Requires Batteries: No Description Product: Keeps the temperature of the liquid at a constant level for longer through its specific heat material (neoprene). Machine washable. Warranty: 1 year Kit contents: 1 bottle covers