Sizing varies among different vendors and manufacturers. Our sizing of "Horse", "Warmblood" and "Draft" are just that. Some manufacturers may call their bridles "Oversize", "Large Horse", or "Warmblood" for the larger horses; we call them all "Warmblood" to avoid confusion. So, if you see "Warmblood" size on our website, it means that the item is larger than a standard Horse size, but not as big as a Draft size.