NOTE:Packing Excluding power bank WARM THE WHOLE BODY---This smart heating underwears are used to generate heat in the core parts of the body(Belly, Back, Waist, Arm,Thigh,Calf) Provides a steady stream of heat in cold winter. SKIN FRIENDLY & COMFORTABLE---The lining of the electric thermal clother is made of comfortable Cotton provide you with all-day warmth, Can be washed by hand or machine,does not affect the heating pads. SMART TEMPERATURE ADJUSTMENT---Electric thermal underwears can be heated 3-kind temperature 40C(green light),50C(blue light),60C(red light), you can manually switch to adjust the temperature,Or connect to mobile phone APP control. SAFETY AND INTELLIGENCE---The heating underwears powered by 5.0V USB power banks,much lower than the human body safe voltage.Warm clothes allow you to enjoy warmth in the cold winter and without any safety concerns. PERFECT GIFT---Thermal underwears is the perfect gift for an elder, lover or friend. The best choice gift for Thanksgiving and Christmas.It keeps you warm anywhere / such as enjoying snowmobiles, mountains, hiking, skiing, hunting or daily office work.