Material: SBR Feature: 1.The material feels delicate, soft and elastic. 2.With shockproof, heat preservation, elastic features. 3.Help to treat the loss of stability. 4.Provide support and stability during the injury. 5.Eeasy to put on and take off S Total Length of Brace: 18cm, Upper Thigh: 17-20cm, Above Knee: 11-14cm, Below Knee: 9-12cm. M Total Length of Brace: 21cm, Upper Thigh: 22-27cm, Above Knee: 14-18cm, Below Knee: 8-13cm. L Total Length of Brace: 23cm, Upper Thigh: 28-32cm, Above Knee: 17-22cm, Below Knee: 13-16cm. XL Total Length of Brace:29cm, Upper Thigh: 29-34cm, Above Knee: 20-23cm, Below Knee: 14-17cm. Size Suggestions: If the measurement matches both sizes, choose the bigger one. Pet Injury Recovery Strap Specifications:S, M, L, XL Application: small and medium dogs Colour: Black Material: SBR (diving material) Note: Remove the sheath 2-3 times a day and let the legs breathe at night. Package Including: 1 pcs x Dog Hock Brace