This bareback pad measures 19.5" long with a 16" drop. The foundation is 3/8" wool blend felt. The base leather (full bottom piece) is top grain 6-7 oz leather. The seat is suede leather. Inside of the seat panel is 1/2" of extra padding. When choosing wither relief, low is almost zero withers. Extra high is not quite a shark fin wither. Please visit our withers page to see examples of withers sizes.