Tumbl Trak makes high quality fitness mats that provide plenty of cushion for even the most vigorous workout. Perform planks, surrenders, situps and more on the Build-A-Mat and your knees, wrists, elbows, ankles and back will thank you. When you use a mat in the gym, studio or in your yoga class, it also helps provide separation between your personal workspace and the space of others. Place a thicker mat under your climbing wall or climbing rope to lessen the sting of a fall.