SPRI Core Board is the ideal workout accessory to add resistance and instability for squats, push ups, weight and balance training, physical therapy and rehabilitation. The wobble board features a textured non skid surface that ensures stability and grip while in use and performing a variety of balancing exercises and workouts. Designed to stimulate the core while enhancing coordination, balance and strength. Features secure grip handles on each side for extra stability and control while doing floor exercises such as, push ups, planks and ground work. Dimensions: 15. 7" diameter, 4" High, Supports up to 300lbs.