Description: This product needs to be linked to a mobile power supply for heating and it will automatically stop heating after not being plugged. The mobile power supply must be purchased separately. Adopting infrared heating it doesn t have harmful radiation. With three-level temperature control it can be intelligent heating you can adjust suitable temperature. The energy saving level is 25 degrees comfortable level is 35 degrees warm level is 45 degrees. Made of high quality polyester it s waterproof scratch-resistant and durable. Therse are 7 sizes for you choice S M L Xl 2XL 3XL 4XL. It s very suitable for home daily use in winter outdoor camping etc. Item Name: Heated Vest Material:Polyester Power Supply: USB Temperature Range: Minus 5 degrees to 40 degrees Waterproof Grade: 3 Size Details: [Our Size S] Bust: 102cm/40.2 Top Length: 63cm/24.8 Shoulder: 39.1cm/15.4 (Approx.) [Our Size M] Bust: 106cm/41.8 Top Length: 65cm/25.6 Shoulder: 40.36cm/15.9 (Approx.) [Our Size L] Bust: 110cm/43.3 Top Length: 67cm/26.4 Shoulder: 41.5cm/16.4 (Approx.) [Our Size XL] Bust: 114cm/44.9 Top Length: 69cm/27.2 Shoulder: 42.7cm/16.8 (Approx.) [Our Size 2XL] Bust: 118cm/46.5 Top Length: 71cm/28.0 Shoulder: 43.9cm/17.3 (Approx.) [Our Size 3XL] Bust: 122cm/48.1 Top Length: 73cm28.8/ Shoulder: 45.1cm/17.8 (Approx.) [Our Size 4XL] Bust: 126cm/49.6 Top Length:75 cm/29.6 Shoulder: 46.3cm/18.2 (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 Heated Vest