(Brookside) Constructed of 1200 denier outer shell that is both waterproof and breathable. Boots are filled with foam and hollow fiberfill and can be wet down to keep the legs cooler during long hauls. These trailering boots are unsurpassed in protecting your horse's legs from the knees to the heels. Boots include double-locking hook and loop closures with elastic for a comfortable fit. Each boot bottom has a heavy-duty vinyl heel protector for longer life. Front boots are contoured and rear boots provide the maximum freedom of movement. The rear boots cover the legs from the hoof to the hock with extra plush fleece.