[UPGRADED HEATED JACKET VESTS] The external fabric of front and back is water and wind-resistant, with elastic fabric of left and right side, more humanized design, skin-friendly and fit comfortable. [11 HEATING ZONES] Built-in 11 carbon fiber heating elements generate heat to core body areas, spreads from the waist, abdomen and upper back to the entire upper body. A button with 3 temperature gears: red(high), white(medium), blue(low). Three temperature settings(from 113to 149) correspond different lasting time. [AMAZING HEALTH CARE GIFT] The effective heat therapy to promote blood circulation, great for pain relief, relieve the discomfort of rheumatism & muscles. This heating vest is perfect for outdoor activities like winter running, fishing, hunting, camping, mountain climbing, hiking, cycling, motorcycle, skiing, skating, golf, or some other outdoor works. It'll be the best gift for parents, families, friends, or just be a special treat for yourself for the coming Thanksgiving Day and Christmas Day. [MULTIPLE SIZES] Please select the desired size according to the size charts.(Tip: If you want a looser fit, please buy a size up) [Notes]: Product does not include power bank.