1、Keep You Warm: Built in carbon fibre heating component and 3 level heating level of 25 ℃ to 45 ℃, can generate consistent heat for 9 parts, including neck, back, abdomen and waist, which keeps the body warm, promotes metabolism, and relieves muscle pain and tension. 2、Reliable Uses: U2A or 4A USB output can better keep you warm. Insert 10000mAh battery pack, which is not included, and this heating vest can keep heat preservation for up to 7 hours at low level, 5 hours at medium level and 3 hours at high level. 3、Comfy Wearing: With quilted, lightweight design and fine lining, you can enjoy unlimited comfort in autumn and winter. With a zip on the front, you can fold this USB heated vest on various clothes to add a touch of fashion to the delicate look. 4、Wider Utility: The best choice for winter. You can wear it to skate, ski, hunt, shovel earth, fish, hike and enjoy outdoor activities. 5、Washing Tips: In order to maintain the heating vest and extend its service life, please wash the vest by hand or put the vest in the laundry bag for machine washing. Place the heating vest in a well ventilated place to dry before use. Do not bleach, iron or dry clean the heating vest. 1 x Heated Vest Item Type: Heated VestMaterial: Polyester, carbon fibre, cotton. Power Supply Mode: USB, delivery without battery.