This boot from Cavallo is a simple to put on and remove stays securely on hoof. Durable construction: rust proof metal waterproof thread and high performance TPU outsole. Absorbs shock and concussion. Suitable for all terrain. Built-in drainage. Fits left or right hoof Is lightweight with a built-in sole relief to take the pressure off sole bars and frog. Moulded-in TPU back flap for maximum bulb protection. Sold in singles.