Specifications:This product needs to be connected to a mobile power supply for heating, and it will automatically stop heating after unplugging.The mobile power supply needs to be purchased separately.Selected high quality down material is warmer, softer and more comfortable.Three-speed temperature control can intelligent heat, and has adjustable temperature.Back is designed with reflective strips, making the night safer.It is suitable for home daily use in winter, outdoor camping, etc.Item Name: VestMaterial: Polyester Fiber, White Duck DownGender: UnisexFeatures: Durable, Easy to Use, WarmSize:[Our Size M] Bust: 50cm/19.7", Shoulder: 41cm/16.1", Length: 62cm/24.4" (Approx.)[Our Size L] Bust: 52cm/20.5", Shoulder: 42.5cm/16.7", Length: 64cm/25.2" (Approx.)[Our Size XL] Bust: 54cm/21.3", Shoulder: 44cm/17.3", Length: 66cm/26" (Approx.)[Our Size 2XL] Bust: 56cm/22", Shoulder: 45.5cm/17.9", Length: 68cm/26.8" (Approx.)[Our Size 3XL] Bust: 58cm/22.8", Shoulder: 47cm/18.5", Length: 70cm/27.6" (Approx.)[Our Size 4XL] Bust: 60cm/23.6", Shoulder: 48.5cm/19.1", Length: 72cm/28.3" (Approx.)[Our Size 5XL] Bust: 62cm/24.4", Shoulder: 50cm/19.7", Length: 74cm/29.1" (Approx.)Notes:Please refer to our size chart and choose the right size.Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Package Includes:1 x Vest