Holding the reins in hand, the rider can adjust the length of the reins on each side while riding as needed. The patent is effective especially in the case of horses that have problems with positioning and avoid the rider's help, as it limits lifting the head up and running away from the bit. When the horse is in the correct position, the rein loosens and no pressure is exerted. The black Kavalkade reins are available in three variants: a narrow webbing rein (16 mm), a narrow rein with hooks and leather inserts and a narrow rope rein with hooks and a leather insert. When buying training reins, their length should be properly selected. For the black rein, a length of 270 cm (2.70 m) is recommended for one part or 540 cm (5.40 m) for the whole.