Скачать или смотреть How to correctly fit your Zilco Driving Harness Breeching

The breeching seat is supported by the loin strap, which may be a double or single strap depending on the model of harness. The crupper has a number of slots to accommodate the loin strap or straps. Select the slots that offer the best stability and enable the breeching seat to hang level.
The breeching seat should be adjusted via the loin straps so that it is neither too low (which would interfere with the hind legs) nor too high (which could allow the seat to ride up and above the point of the rump). As a rough guide, the correct height is halfway between hock and dock, with slight variances for horse build and conformation. The important thing to consider is that when there is pressure on the breeching seat (as when going downhill or stopping), this pressure bears onto the hindquarters where it does not interfere with the hind legs. If the breeching is too low, it can push the hind legs from under the horse and make the horse feel insecure.