The saddle pad must fit the saddle and should not be too small. There should be no creases and it must not press or rub.
You should also make sure that the space between the saddle cushions is not reduced. Of course, the saddle pad should not disturb the movement of the horse. To meet these requirements, saddle pads are adapted to the shape of the saddle.
That is why saddle pads for all purpose, jumping and dressage saddles have different lengths at the back, as well as the saddle flap area.
When buying a saddle pad, you must therefore first know which saddle it is supposed to fit under.
When using the saddle, you should always pull the girth straps of the saddle through the corresponding eyelets of the saddle pad. Only then you can be sure that it will not slip out of place when the horse moves.