I: internal wear. it's best to wear a suit or jacket outside.New d ed Vestheated down vest works as a personal radiator to keep your body warm anytime. As one of heat therapy. the vest can promote healthy flow that increases the oxygen and nutrient flow to muscles. relieving pain. decreasing recovering time and improving overall performance. It is specially designed for most of the people like cold weather workers and s performing outdoor activities (like cycling. hiking and winter sports).11 d ing AreasThe professional heating vest s more heat areas. compared to old heating clothes. they have only 5 heating areas. Our new vest covers 9 heating areas. built in with quality carbon fibers heat elements due to its quick heat-up technology. lightweight. flexible & safe to use. rate consistent heat for many a uncture points and meridians. including your back. abdomen. sholder and waist. helping to maintain body warmth.3 S es & 3 ing Triple-s design Should. Waist & s can be operated separately. 3 heating level from 40/ 104 to 65/ 149. s can choose how to heat the heating pads according to your own demands. body will be comfortable and does not sweat because of overheating. and comfort as . individually controlled design makes your device more power-efficient and more durable.Safety AssuranceBuilt-in thermal protection module. Once it is overheat. it would stop until the heat return to the standard temperature. so it is 100% safe to use. Work with common power bank with common USB port. you can choose High-storage power bank or prepare multiple batteries in advance. ( bank is not included) Guarantee & Service Please choose the right size according to the size chart. of all. by buying with us. you'll be working with a company that has a quality guarantee on every product that leaves our factory. Better still. we offer full customer