Features: The back belt can be easily stored in a bag. The self-heating back belt is safe and has no side effects. The elastic heat belt is suitable for drivers, office workers, athletes, the elderly, women, and other individuals. It uses traditional Chinese medicine moxibustion heat compression technology to generate consistent warmth. This product makes a thoughtful gift for friends, family members, or colleagues during holidays such as Christmas. Specifications: Component: Derong Color: 5 options available Type: 2 options available Size: Medium / Large / XL / XXL (Chinese sizing, please refer to the size chart for selection) Size M: Height: 25 cm (9.84 inches) Width: 20 cm (7.87 inches) Waist: 57–70 cm (22.44–27.56 inches) Size L: Height: 25 cm (9.84 inches) Width: 23 cm (9.06 inches) Waist: 70–80 cm (27.56–31.50 inches) Size XL: Height: 25 cm (9.84 inches) Width: 27 cm (10.63 inches) Waist: 80–100 cm (31.50–39.37 inches) Size XXL: Height: 25 cm (9.84 inches) Width: 30 cm (11.81 inches) Waist: 100–123 cm (39.37–48.43 inches) Package Includes: 1 Piece Warm Waistband Note: Please allow 1–3 cm variation due to manual measurement. Due to differences in monitor displays, the actual color of the item may vary slightly from the image. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours