GEARWRENCH Men's Medium 7.4-Volt Lithium-Ion Black Heated Shop Vest with one 5.2 Ah Battery and Charger

Made of lightweight yet durable material, this shop vest is perfect for any outdoor activities in cold. Thin construction allows to wear either on the top or as layer. 3 carbon fiber heating elements generate heat across core body areas (left and right chest, mid-back). Adjust 3 heating settings (High, medium, low) with just a simple press of the button.Shell: 100% cotton, lining, 100% polyesterYkk zipperMachine washableMock-neck high collarBerber fleece lining