Features: The back belt can be easily stored in a bag. Self-heating herbal back belt is safe and has no side effects. Elastic heat belt is suitable for drivers, office workers, athletes, the elderly, women, and other individuals. It uses traditional Chinese medicine heat compression technology to generate consistent warmth. A great gift option for friends, family members, or colleagues during holidays such as Christmas. Specifications: Component: Fabric materials Color: 5 options available Type: 2 options available Size: Medium / Large / XL / XXL (Chinese sizing standard – 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 variation due to manual measurement. Due to differences in monitor displays, actual color may vary from the image.