HILASON WESTERN SADDLE PAD MEMORY FOAM AND ANTI SLIP TOP MATERIAL : Breathable Heat and Sweat Management Fabric.. SPINE AREA : Shock absorbing Memory Foam.. MIDDLE LAYER : High Density Cusion. BOTTOM MATERIAL : Anti-Slip Pebble Rubber (Tacky Tack). SIZE : 27 inches length and 28 inches width Approx.