Electric Heated Underwear Shirt for Men and Women; Imagine that in the cold winter, we usually need to wear a thick down jacket, and it is very heavy and probably not warm. Now, with these Heated Underwear , we can enjoy both lightness and warmth! We are free to decide the temperature and mood of winter life. Read more Outstanding Features Lightweight and super soft. Safe heating technology,provide continuous hours warmth. Safer Multi-protection and Compatibility battery: 7.4 V /3000/4000mAh. Carbon fiber heating elements,Promote blood circulation throughout the body. Read more One-Button Operation,3 Heating Level This electric thermal base layer designed with 3 heating settings that can be adjusted by one button from 104℉(lowest) to 140℉(Highest).Far-infrared heating function enhances blood circulation,relieve muscle soreness ,activate various functions between skin to promote metabolism. High Heat (Red, 150°F) Medium Heat ( Green, 130°F) Low Heat (Blue,110°F) Read more Read more Package Include: 1 X Heated Top & Heated trousers 2 X 7.4V 3000mah Li-ion Batteries 1 X Dual Charger 1 X Instructions