THERM-IC Powervest Urban Men Heated Vest & Powerbank Set"This sleeveless jacket, with a stylish streetwear look, will keep you warm during everyday outings. The six heated areas distributed throughout the vest provide you with a pleasant, consistent warmth. The Therm IC heating technology combined with the POWERBANK battery helps you to confidently fight the cold with peace of mind. Both comfortable and light, it can be worn by itself or under another piece of clothing to meet all your needs.