This pad is just like the original Merrill Barrel pad but fits the Sue Smith Saddle and square skirted saddles. It is very versatile, great for both the hard or easy to-fit horses. The memory foam accommodates both type of fits. In addition to memory foam, this pad features 3/8" closed cell therapeutic foam and either a 1/4" hospital grade felt or neoprene bottom. The dimensions are 29" long x 27" wide.