The product is designed for keeping the baby's bottle warm on the go, a perfect solution for parents to feed the baby with warm milk in the car while travelling. Using the USB plug, the milk warmer could be powered by the portable charger, phone charger, desktop and laptop. Safety comes the first, the maximum voltage of 5V ensures that the heater works safely. Made of cotton and polyurethane fabric, the product does not contain any fluorescent agents, chemical-sensitive mom and baby won't get allergy by that. The heating pad is detachable, the sleeve could be sterilized by high-temperature steam to keep the mom and baby safe all the time. Specification: Dimension: 28.0cm x 13cm/7.09in x 5.12in Material: Cotton and polyurethane fabric Package Includes: 1 Piece Pouch 1 Piece USB Heating Pad Note: The colour might be slightly different due to the colour calibration of each individual monitor. Please allow slight measuring deviation due to manual measurement/margin tolerance. Thanks for your understanding and attention. Wish you could have a pleasant shopping experience!