Specification:  Color:Blue;  Material:Polyester;  5 Sizes:L/XL/XXL/XXXL/4XL;  Power Supply Interface: USB;  Function: Keep warm, Anti water splashing and Prevent cold;  Age Of Application: Adult Men & Women;  Applicable Scene: Outdoor sports / Daily leisure;  3 Gear Temperature Adjustable;  One key control, three temperature control, intelligent automatic constant temperature, according to the ambient temperature 30s quickly rise to the set temperature.     High temperature heating(Blue Light):  About 50 degree Celsius;  Middle Temperature heating(White Light):  About 40 degree Celsius;  Low temperature heating (Red Light):  About 30 degree Celsius.     Features:  Selected fabrics, skin-friendly, warm, comfortable and soft.  Satety carbon fiber heating:Soft/stable in heating/radiation-free/Long service life.  3-gear control temperature:adjust the temperature at will.  It can be washed with water:remove the power,machine wash,hand wash,up to you.  Zipper in front of the clothes, modifing the line of the body, keep warm and beautiful.  Smart heated vest made f or warmth keeping without wearing bulky clothes under cold conditions.  It provides body warming and blood circulation, perfect for climbing, hunting, skiing, motorcycling, camping, snowmobiling, fishing, hiking, etc.     Package Included:  1 x Electric Heated Vest.