This riser pad is ideal for the horse or yard owner using one saddle of different shaped horses, or on a horse that changes shape between the seasons or recovering from muscle wastage. Prolite is a revolutionary lightweight gel-foam that is 1/4 of the weight of traditional gels, but with the same shock absorbing & weight dispersal properties. Machine washable & durable, prolite has established itself as the most effective & lightweight shock protection you can use on your horse.