Introducing Dollamur Sports Surfaces FLEXI-Roll product innovation for tumbling, gymnastics, and cheerleading. IT's a durable practice and competition surface built to withstand repeated compression. Manufactured using an athletic grade closed cell, cross linked polyethylene foam and a 26oz needle punch non-slip carpet surface. The foam does not shrink or harden over time. The polyolefin fibers and special latex backing allows the carpet to be heat laminated and bonded directly to the closed cell foam, making this finished product perfect for shock absorption, extra speed and resiliency in a high performance sport. It is the same materials used to manufacturer Dollamur's full size practice and competition mats used in many prestigious events worldwide. Velcro is not included with your order.