this product is a utility model electrothermal water bag.the use of velvet fabric and high -grade plastic material ,high-energy storage system for heating hydrothermal body heat even through the semiconductor storage bag,with a unique automatic temperature control features ,comfortable and soft

this product is a utility model electrothermal water bag.the use of velvet fabric and high -grade plastic material ,high-energy storage system for heating hydrothermal body heat even through the semiconductor storage bag,with a unique automatic temperature control features ,comfortable and soft ,safe and reliable  the use of simple ,easy to carry charging for 8-12 minutes keep warm 2-3 hours 100% same picture