MaterialBe made of the breathable ultra light material, comfortable nylon fabric and water-resistant coating. Having excellent windproof and warm-keeping quality, ensuing you be able to enjoy exceptional warmth while still maintaining peak performance with unrestricted. Keep Your Body Warm and Cozy11 heating zones are distributed across the collar, mid-back, as well as underneath the two pockets for core-body warmth. You can stay warm in all outdoor activities like hunting, fishing, and even outdoor work. Perfect design, easy maintenanceThe use of sewing, lightweight design, let you wear more comfortable. Our hot vest pocket has an invisible zipper design for better appearance. OccasionRechargeable hot vests keep you warm, help blood circulation, relieve muscle pain, perfect outdoor activities such as home, casual, Please noteHand or gentle machine wash in cold water / Do not bleach / Line dry. Our clothes all are designed for Asian figure, which means would be smaller than normal European sizes. Please refer to our own size chart and you can find it in our pictures or from the description.