Having Our Body warmer vest, Lightweight USB Charging Heated Vest, Electric 5V Heated Jacket Clothes Warmer You will: - Do not had to wear thick layers of clothing, bloated and inflexible. - Bear the extremely cold winter, and will not shr in the wind. - Do not take a lot of time to put up with the hassle of getting dressed and undressed. Size Details: M: Chest Circumference: 92cm (36.2 inch), Waistline: 88cm (34.6inch), Length: 60cm (23.6 inch) L: Chest Circumference: 94cm (37 inch), Waistline: 92cm (36.2inch), Length: 61cm (24 inch) XL: Chest Circumference: 100cm (39.4 inch), Waistline: 98cm (38.6inch), Length: 62cm (24.4 inch) XXL: Chest Circumference: 106cm (41.7 inch), Waistline: 104cm (40.9inch), Length: 63cm (24.8 inch) 3XL: Chest Circumference: 108cm (42.5 inch), Waistline: 106cm (41.7inch), Length: 64cm (25.2 inch) Note: Please refer to the size chart and measure your size before purchasing Features: ❆ Easy button control & 3 heat-settings ❆ High-quality comfortable neoprene material ❆ Warm your body and promote circulation ❆ Promote metabolism, stimulate circulation ❆ Relieve Rheumatism & Muscle Pain ❆ Keep the whole body warm in the Cold Winter ❆ gift for coming Thanksgiving Day and Christmas Day ❆ Fits all the persons that you care about How To Use: 1. Insert the USB port to 5V power source, we recommend 5V/2.1A power bank.(Note: Power bank need to purchase separately) 2. Long pressing the switch of the vest for about 3-5 seconds to start. Specification: - Power Supply: 5V/2.1A Power Bank ( Not Included ) - Washable: Hand wash with cold water, then air dry; Machine washable, but you'd better to place the heated vest into a laundry bag - Material: Neoprene Package List: 1 * Vest