Feature:  1.Lightweight vest with heating: light insulation allows you to use a variety of windproof vests without restrictions.  2.Two zone heating, far infrared carbon fiber heating.  3.Three gear temperature control, intelligent temperature control.  4.USB vest and heating: there are heating zones at the front and back, from preheating to very high heating of 3 degrees.  5.Hot Vest Size: suitable for all (L - 3XL), suitable for men, women, men and girls.  6.Perfect for all occasions: ideal for every day, walk the dog in the cold autumn air, put on his favorite football team, wear a winter coat, even when using a cold office. Ideal family members, friends, employees, enjoy cycling, hiking, camping, fishing and other activities Outdoor activities in autumn and winter.  7.Long lasting heat and long endurance of 8 hours.     Specification:  Name: Vest;  Material: polyester fiber;  Size: L ~ 3XL;  Color: Black/Blue/Red.     Warm Tips:  1.If not used for a long time,please do not plug in removable charger.  2.Do not use high temperature water or strong acid detergent.  3.Forbidden to use electricity for wet clothes,Please turn off the power and stop using if cloth is wet.  4.Use time depending on the capacity of removable charge.        Package Included:  1 X Electric Heated Vest (Power Bank is not included).