With its trapezoid-shape design, the wider side can be placed face-down to provide greater stability, or the narrow side can be placed face-down for more challenging instability. Built-in Velcro connections form a 72" long beam. The two included balance beams can be placed in a variety of geometric combinations, such as parallel, 90º angle to form a "T" or "L" shape, or any angle to each other to enrich training options. Made of super-soft closed-cell foam with vinyl coating. Easy to clean. Blue. Two beams per set; each is 2½ x 8¼" x 6½" x 36".