Features: The back belt can be easily stored in a bag. Self-heating herbal back belt is safe and without side effects. Elastic heat belt is suitable for drivers, office workers, athletes, the elderly, women, and other groups. It uses traditional Chinese medicine heat therapy to continuously generate 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 the 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, the image may not reflect the actual color of the item.