We offer three styles of this pet knee pad for you to choose from; please select based on your pet's needs. This product provides elbow support and helps improve mobility in dogs suffering from elbow arthritis, eczema, dysplasia, and shoulder dislocation. It protects against elbow calluses, bedsores, and aids in wound healing. The patent-pending design is based on canine anatomy, ensuring a secure fit, comfort, and effective support during all activitiesincluding standing, walking, running, jumping, sitting, or lying down. The soft, breathable compression fabric delivers essential support during use, while the elastic strap and snug-fit design allow flexibility and freedom of movement. Dogs should feel comfortable when wearing this product. This dog elbow protector has been tested for comfort, health, and support levels across popular dog breeds and has been veterinarian recommended. Size S: leg circumference 1113 cm, foot circumference 1012 cm, foot height 9 cm, total height 24 cm Size M: leg circumference 1620 cm, foot circumference 1418 cm, foot height 13 cm, total height 35 cm Size L: leg circumference 2228 cm, foot circumference 1723 cm, foot height 16 cm, total height 41 cm