Kentucky Horsewear Knee Tendon Boots are made for horses that hit their knee while jumping, but with full freedom of movement with the design cutout at the inside of the knee joint.The new design features the same sturdy outer shell made up of an extremely light yet sturdy TPU outer layer to protect against impact, while the bullet area is reinforced with D3O shock absorbing molecules for ultimate protection. Laboratory tests show that these protectors absorb impact more than 50% better than any protector on the market by spreading the impact of a shock equivalent to one that would break a human bone. The protectors have intelligent vents that protect the legs and tendons from overheating, as well as a perforated neoprene lining that allows these protectors to breathe incredibly while also providing excellent shock absorption to the skin. freedom of movement around the pastern when the horse jumps. Attention has also been paid to giving optimal freedom and comfort around the root leg so that the horses are able to bend the leg without any hindrance.