The Pet Life Extreme-Neoprene Joint Protective Reflective Large Pet Sleeves are composed of lightly flexible neoprene. These pet wound care sleeves are perfect for all pets in operation recovery and further help prevent joint operation. These sleeve-like pet bandages are designed and engineered to place less stress on your pet's knee joints and are essential for all older dogs, puppies and even cats. It features reflective lining for added protection during night walks. They are perfect for those active dogs.Note: This product may require up to 2 additional days for order processing prior to shipping