ORORO Women’s Heated Vest with Battery, Heating Vest for Hiking Skiing Outdoors (Black,M)

This upgraded battery is 40% smaller than the ORORO standard battery and the 7.4V Output allows the heated apparel heat up rapidly Vests are lightweight, yet insulated, so you can wear them with or without a jacket Slim-cut design offers you a snug fit so you can better feel the warmth from four carbon fiber heating elements Durable fabric and carbon fiber heating elements are completely safe for hand and machine washing Four carbon fiber heating elements generate heat across your core body areas (left & right front stomach, upper-back, and collar) Adjust three heat settings (high, medium, low) with just a simple press of a button Up to 10 working hours (3 hours on high, 6 hours on medium, 10 hours on low heat) Heats in seconds with 7.38V UL/CE-certified battery Our battery has a USB port for charging smartphones or other mobile devices