The heated warm vest is perfect for cold seasons, which is the choice and also works great as a standalone vest. Waterproof electronic supports hand washing, and machine washing. heated vest- 5V safety voltage. Three style temperature mode control. Best Christmas parents and families. Feature - ColorBlack - Material: Polyster. - Size Table: S: 160cm(height); 63cm(clothes length); 102cm(chest); 39.1cm(shoulder width); : 165cm(height); 65cm(clothes length); 106cm(chest); 40.3cm(shoulder width); L: 170cm(height); 67cm(clothes length); 110cm(chest);41.5cm(shoulder width); XL: 175cm(height); 69cm(clothes length); 114cm(chest); 42.7cm(shoulder width); 2XL: 180cm(height); 71cm(clothes length); 118cm(chest); 43.9cm(shoulder width); 3XL: 185cm(height); 73cm(clothes length); 122cm(chest); 45.1cm(shoulder width); 4XL: 190cm(height); 75cm(clothes length); 126cm(chest); 46.3cm(shoulder width); - Operantion under USB charging, heated within 1 minute. - Three style temperature mode control. Up to 45°C. - The heated warm vest is perfect for cold seasons, which is the choice and also works great as a standalone vest. - Waterproof electronic supports hand washing, and machine washing. - heated vest- 5V safety voltage. Built-in thermal module. - Best Christmas parents and families. - Note: This product does not have a mobile power supply and needs to be prepared. It can be machine washed, hand washed, do not wring dry by hand. Package list: 1 x electronic heated vest