3 COLORS available SIZE: XXS: thigh circumference 12-14 joint circumference 8-11 ankle circumference 4-6 leg height 13 XS: thigh circumference 17-20, joint circumference 11-13, foot mouth circumference 7-10, leg height 16 S: thigh circumference 22-25, joint circumference 13-16, foot mouth circumference 10-14, leg height 20 M: Thigh girth 29-32 joint girth 17-20 foot girth 13-16 leg height 25 L: thigh circumference 36-39, joint circumference 22-25, foot mouth circumference 16-19, leg height 30 Material: Neoprene Selected diving material (SBR) diving material is a kind of synthetic rubber foaming body, which is delicate, soft, elastic, shockproof, heat preservation, elastic, impermeable, airtight and so on. Diving materials are widely used in: diving suit, sports protective equipment, body shaping products, gifts, thermos cup cover, fishing pants, shoes and other fields, and can replace natural rubber to make tires, rubber shoes, hose, tape and other general products. Dog Elbow Bandage is the ideal solution for surgery, Ligament Injuries and chronic arthritis, Osteoarthritis, Arthritis, ED, Hygroma, pressure sores. High quality Neoprene material dog elbow protector with hook&loop closure system,comfortable and easy to wear. Remove brace every 2-3 hours and at night to allow leg to "breathe".Velcro closure system can adjust it depend on your dog ,and fit it well. This durable therapeutic dog hock brace can reduce pain and chronic inflammation. Arthritis and joint injuries limit your dogs mobility. Give your dog the extra support they need to continue enjoying their happy and active life. Please refer to the description section to choose the best size. Adjustable size will make your pet more comfortable.