USB warmer,with a lower current from computer,the warmer can keep the temperature of drink around 70 Celsius coffee warmer, neoprene coffee warmer for car is our newest product in China--USB warmercoffee cup heater,USB cup warmer, USB mug warmer,USB drink warmer.The product own the high lever ability in keeping the drink warm.Made of the high quality neoprene material which can fit for different ...