Description: Producing heat for 11 core body areas including the neck shoulders back belly and waist this vest helps keep the body warm and relieves pain and muscle tension. There are 3 temperature modes in the vest to meet your different needs. Moreover it is stable safe and reliable. It is constructed of polyester material. There are M L XL 2XL 3XL 4XL 5XL sizes for you to choose from. It is suitable for cold weathers. Item Name: Vest Material: Polyester Style: Casual Gender: Men Size Type: Regular Season: Winter Collar Type: Stand Collar Sleeve Length: Sleeveless Features: 3 Temperature Modes USB Interface Dual Controlled Button Size Details: Size: M Bust: 106cm/41.73 Clothes Length: 65cm/25.59 Shoulder: 40.3cm/15.87 (Approx.) Size: L Bust: 110cm/43.31 Clothes Length: 67cm/26.38 Shoulder: 41.6cm/16.38 (Approx.) Size: XL Bust: 114cm/44.88 Clothes Length: 69cm/27.17 Shoulder: 42.7cm/16.81 (Approx.) Size: 2XL Bust: 118cm/46.46 Clothes Length: 71cm/27.95 Shoulder: 43.9cm/17.28 (Approx.) Size: 3XL Bust: 122cm/48.03 Clothes Length: 73cm/28.74 Shoulder: 45.1cm/17.76 (Approx.) Size: 4XL Bust: 126cm/49.61 Clothes Length: 75cm/29.53 Shoulder: 46.3cm/18.23 (Approx.) Size: 5XL Bust: 130cm/51.18 Clothes Length: 77cm/30.31 Shoulder: 47.5cm/18.7 (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 (Power Bank Not Included)