1、Keep Warm baby milk to perfect temperature. 2、Small and compact design for easy carry and storage. 3、Perfect solution for parents to conveniently, safely and easily Keep Warm baby bottle while in the car traveling. 4、Made of high-quality cotton and spandex blend material, which is safe and non-toxic. 5、Compatible with many kinds of 5V 2A USB devices such as power bank, laptop, charging adapter, etc. Are you worried that your baby's cold milk is not good for the stomach? Now we can provide you with a bottle keep warm cover, so that your baby can drink warm milk both at home, in outdoors or on the go. Features: Keep warm baby milk to perfect temperature. Small and compact design for easy carry and storage. Perfect solution for parents to conveniently, safely and easily Keep warm baby bottle while in the car traveling. Compatible with many kinds of 5V 2A USB devices such as power bank, laptop, charging adapter, etc. Made of high-quality cotton and spandex blend material, which is safe and non-toxic. Specification: Material: cotton, spandex blend (Optional)Pattern: Donut Pattern / Cat Pattern / Rocket-Pattern / Rainbow-Pattern / Polar Bear-Pattern / Dinosaur-Pattern Instructions for use: Voltage 5V, current 1A to 2A. Ordinary mobile phone charger, computer USB interface, charging treasure, etc. can be used. Environmental instructions: no fluorescent agent Washing instructions: Take out the heat-generating components when washing. Size: Approx. 28cm * 13cm * 1cm   Package list: 1 * Baby Bottle Keep Warm Cover 1 * Heating Part(Data cable and heater chip are welded together) Note: 1. Please allow slight error due to manual measurement. 2. Different monitor colors may be different. Thanks for your kind understanding. 3.The product is an incubator without heating, so it is necessary to put the temperature suitable milk into the incubation bottle insulation and cannot heat the low temperature.