NatureROCKS Sandstone Playground Climbing Boulders bring active play and fun to any outdoor space. The climbing Climbing Boulders are artfully designed from real rock outcroppings and hand painted to look and feel like sandstone. The medium Playground Climbing Boulder adds beauty and function to the playground or landscape and offers authentic climbing experiences. It appeals to all ages helps develop balance, strength and coordination. In addition, climbing Climbing Boulders spark the imagination and invite creative play. Consider combining large and medium Playground Climbing Boulders to create an arch to add even more rock climbing and active play opportunities. The medium climbing Climbing Boulder is constructed of durable, weatherproof glass fiber reinforced concrete (GFRC).