Features: The back belt could be easily put into a bag.Self-heating wormwoods back belt is safe and without side effects.Elastic heat belt is suitable for driver, office workers, athletes, the elderly, women and other groups.It uses the moxibustion hot compress of traditional Chinese medicine to continuously generate heat and keep warm.A perfect gift for your friend, family member, colleague in christmas day, and so on.Specifications: Component: DerongColor: 5 Kind OptionalType: 2 Kind OptionalSize: Medium/Large/XL/XXL(Chinese size ,follow the size chart to select please)Size: M Height:25cm(9.84inch) Width:20cm(7.87inch) Waist:57-70cm(22.44-27.56inch)Size: L Height:25cm(9.84inch) Width:23cm(9.06inch) Waist:70-80cm(27.56-31.50inch)Size: XL Height:25cm(9.84inch) Width:27cm(10.63inch) Waist:80-100cm(31.50-39.37inch)Size: XXL Height:25cm(9.84inch) Width:30cm(11.81inch) Waist:100-123cm(39.37-48.43inch)Package Includes: 1 Pc Warm Waistbandnote: Please allow 1-3cm errors due to manual measurement.Due to difference betweeen different monitors,the picture may not reflect the actual color the item.