Tough 1 Western Shim Saddle Pad 31x32 This pad is constructed of comfortable moisture-wicking felt, with rugged wear leathers and canvas cover, making it durable to withstand everyday use. Six shim pockets are strategically located giving you the ability to correct a variety of saddle fitting issues by removing the felt shim pads that are included. The western contour shim saddle pad can be used as a stand-alone pad or under a saddle blanket. 31 x 32. 1/2 Felt bottom.