Hello and welcome to our store. We hope our service can satisfy you and wish you have a pleasant shopping experience! Joom: The information about the product is provided by the seller. Notwithstanding any of this information, the product is not intended for diagnosis, cure, mitigation, treatment or prevention of any disease, is not a drug or a medical device, and should not be used for any medical purposes. Please consult a medical specialist. Features: Brand new and high quality. Efficacy: magnetic, decompression, massage, ventilation Specification: Material: Cotton fabric Surface tourmaline self-heating cloth Color: White Thickness: 6mm Size: 36,37,38,39,40,41,42,43,44,45 Label:Yes Size:36, Length: 23cm Size:37, Length: 23.5cm Size:38, Length: 24cm Size:39, Length: 24.5cm Size:40, Length: 25cm Size:41, Length: 25.5cm Size:42, Length: 26cm Size:43, Length: 26.5cm Size:44, Length: 27cm Size:45, Length: 27.5cm Note: There could be some slight differences in the color tone of the pictures and the actual item. Please allow 1-2mm differs due to manual measurement, thanks. Package Included: 1 Pair Insoles