This lightweight, all-terrain boot absorbs shock and concussion. The honeycomb design optimizes strength and minimizes weight with a soft foam collar for comfort. Simple to put on and remove, stays securely on hoof. Made with durable construction: Rust proof metal, waterproof thread and high performance TPU outsole, and molded-in TPU back flap for maximum bulb protection. Built-in sole relief takes pressure off sole, bars and frog. Patented RES replaceable Velcro closure system is exclusive to Cavallo boots. Built-in drainage and reflective logo. Boot fits left or right hoof. Sizes 0-6. Please specify size. Sold individually. Simple to Measure: Simply measure each hoof length from buttress to toe after a fresh trim. Size 0 = 4" to 4 1/4", Size 1 = 4 5/16" to 4 9/16", Size 2 = 4 5/8" to 4 7/8", Size 3 = 4 15/16" to 5 3/16", Size 4 = 5 1/4" to 5 1/2", Size 5 = 5 9/16" to 5 13/16", Size 6 = 5 7/8" to 6 1/8".