Features: The back belt can be easily stored in a bag. The self-heating herbal 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 heat therapy to provide continuous warmth. A great gift for friends, family members, or colleagues during holidays such as Christmas. Specifications: Component: Fabric material Color: 5 options available Type: 2 options available Size: Medium / Large / XL / XXL (Chinese sizing, please refer to size chart) Size M: Height 25cm (9.84in), Width 20cm (7.87in), Waist 57–70cm (22.44–27.56in) Size L: Height 25cm (9.84in), Width 23cm (9.06in), Waist 70–80cm (27.56–31.50in) Size XL: Height 25cm (9.84in), Width 27cm (10.63in), Waist 80–100cm (31.50–39.37in) Size XXL: Height 25cm (9.84in), Width 30cm (11.81in), Waist 100–123cm (39.37–48.43in) Package Includes: 1 x Warm Waist Belt Note: Please allow 1–3cm measurement deviation due to manual measurement. Due to differences in monitor displays, the actual color may vary slightly from the image.