This Springboard gets its extra punch from long-lasting, heavy-duty .25-inch chromium-plated music wire springs. The thinner 1/2" maple top allows more flex, thus more spring. The top surface is padded with 3/8" closed cell cross-linked foam and then the entire board is covered with high quality carpeting. The Springboard is engineered to last for years. Our webbing system adds greater lateral stability to the board. Rubber pads prevent marring of floor and increased traction. The 20cm (8") eight-spring board meets all FIG, USAG, NCAA and high school specifications for men’s or women’s programs. Use all eight springs for college level programs or as few as four springs for lighter weight gymnasts. Replacement springs available.