This boot is uniquely moulded in two parts from German grade BASF TPU. The outer shell is carefully engineered so that the main shell is soft enough to wrap comfortably around your horse’s leg and flex with movement, while the harder strike area is built to withstand shock at a much higher level than most single mould soft touch boots. The boot is heat sealed to form an unbreakable bond. The addition of extra large vents lined with micro mesh filters allows generous air flow. Cool air helps prevent overheating of the lower leg, a leading cause in bowed tendons and suspensory injuries. USA Velcro closures are double stitched for durability.