The hunter-jumper division is a branch of competitive horseback riding that is judged on the horse's performance, soundness and when indicated, conformation, suitability or manners. A "show hunter" is a horse that competes in this division. Show hunters, ideally, show many qualities that were rewarded in the fox hunting field such as manners, fluid movement, and correct jumping style. They are shown in hunt seat style tack, and are often of Warmblood or Thoroughbred type, though a hunter-style pony is also seen in youth classes. In the United States, show hunters are primarily exhibited over fences, with a few additional classes offered for horses shown in-hand or on the flat. In the United Kingdom, competition over fences is called "Working Hunter," and the term "Show Hunter" describes classes held on the flat.
The show hunter should have a balanced frame, where they are ‘round’ in their top line and ‘on the bit’ softly. They should have a long, sweeping step that covers maximum ground per minimum effort, and have a rhythmic, 12' stride at the canter. Ideally, the majority of the movement occurs from the horse's shoulder and hip, and there is minimal flexion in the horse's joints.
The frame of the show hunter differs from that of dressage horses, eventers, and show jumpers, as it travels in a long and low frame, with its head moderately extended. Its frame is more "stretched out" than horses competing in dressage, eventing, or show jumping, but the horse should not be on its forehand. The riders of show hunters often ride on a slightly looser rein than seen elsewhere to facilitate this type of movement, and the horse carries its head just in front of the vertical.
Although the horse is in a long and low frame, it should still be able to collect its stride when asked. The horse must also be proficient at lengthening its canter stride while still maintaining its tempo and rhythm.
The walk of the show hunter is free and ground-covering; the trot should be balanced and flowing. The canter should be moderately collected. The horse should have a long galloping stride (12 feet is the expected length), but it should still be balanced and rhythmic.
A good show hunter must possess an excellent jumping form. The forearm should be parallel or higher with the ground, and the knees and lower legs should be even. The horse should not be lazy with its lower legs, but should tuck them under its forearm as it clears the fence, clearly bending its fetlocks and knees. The horse should not throw its body or legs to one side, but should stay perfectly straight over the fence. A good show hunter should show a great bascule, or roundness over a jump. This is often described as the horse taking the shape of a dolphin jumping out of the water, with the horse's back up, and its head reaching forward and down over the fence.