Крупер: конская упряжь для фиксации седла и шор

Strap under horse tail

A crupper ('/k//r//ʌ//p//ər/; occ. spelled crouper) is a piece of tack used on horses and other equids to keep a saddle, harness or other equipment from sliding forward.

The crupper consists of a loop (the crupper itself) and an adjustable strap (crupper strap or back strap) that connects the crupper to back of a riding saddle or the other parts of a harness. The strap runs from the horse's dock, over the croup, to the saddle or to the back band (sometimes called the saddle) of a harness. Usually made of leather, the crupper loop is stuffed, traditionally with linseed to keep it supple in use, and molded into a tube that is shaped into a loop. The crupper may be sewn to its strap, or attached to the strap by one or two buckles. If the crupper has no buckle, then the skirt of the horse's tail is folded up onto the tailbone and the tailbone is slipped through the crupper. If it has buckles, the crupper is unbuckled and passed under the dock.

A crupper is used to keep the equipment placed on a horse's back from slipping forward. Cruppers are seen most often on horse harnesses. They are also used on the surcingles of bitting rigs, riding saddles, and, occasionally, pack saddles. A crupper needs to be snug enough to keep the saddle or harness in place, but not so tight that the horse is irritated or the skin of the tail is damaged. Cruppers are adjusted to engage only when needed; pressure is not meant to be constantly applied. If a crupper is too tight, it can cause severe chafing, discomfort and sores. If it is too loose, the saddle or harness may not stay in the proper position.

For driving, a crupper is used to prevent the parts of a harness that fit around the barrel of the horse (the girth, bellyband, back band and saddle Some harnesses with breeching use this as an anchor instead of a crupper.

On pack horses, saddle breeching alone is quite common. However, sometimes a crupper is used in addition to breeching.

A crupper has been a standard part of mule saddles for centuries. In the 1614 spurious Avellaneda Segunda Parte to Don Quixote, a mule crupper is mentioned several times, and it is translated as "crupper" in two 18th century English translations. Cruppers were once part of the standard design of cavalry saddles. The McClellan saddle used by the United States Army utilized an optional crupper into the early 20th century, though difficulties with proper fitting eventually led the army to discontinue its use. Cruppers continue to be part of the ceremonial tack for some cavalry regiments and tent pegging teams.