Feature: 1. Stay Warm: This warm keeper can effectively keep warm baby breast milk at the optimal temperature, so that the baby can be fully cared for. 2. Not Easy to Fall off: The warm keeper bag is an upgraded model, and there is a layer of cloth at the bottom of the insulation cover, so that the bottle is not easy to fall off. 3. Portable: Our USB milk heat keeper is small in size and light in weight, small and compact design, easy to carry and store, can meet our daily needs. 4. Convenience: This portable bottle warmer keeper can well solve the problem of keeping baby's baby bottle warm when parents travel, so that the baby can drink warm milk powder at any time. 5. Compatible: Bottle heat keeper is compatible with a variety of 5V 2A USB devices, such as power banks, laptops, charging adapters, etc., so you don't have to worry about not being able to charge when you go out. Specification: Item Type: Portable Milk Warm Heat Keeper Material: Cotton, polyurethane fiber blend Size: Approx. 26.5 x 13cm / 10.4 x 5.1in Instructions for Use: Voltage 5V, current 1A to 2A. Ordinary mobile phone chargers, computer USB ports, power banks, etc. can be used. Environmental Protection Statement: No fluorescent agent Washing Instructions: The heating element needs to be taken out when washing. Package List: 1 x Portable Milk Warm Heat Keeper 1 x Heater Pad Note: The product is a warm keeper without a heating function, so it is necessary to put milk at a suitable temperature into a warm keeper bag for insulation and cannot heat a low temperature.