The Balance Plastic Hemispheres are a challenge to anyone’s balancing skills, and can be used either side up to vary the difficulty. The Hemispheres are weighted with sand and have an anti-slip rubber profile. They can withstand damp if left outdoors. Details: Includes assorted colors 5.91" x 5.91" x 3.15" Weight Capacity: 220.5 lb. 6 Balance Plastic Hemispheres Challenge balancing skills Can withstand damp if left outdoors Use either side up to vary the difficulty For ages 3 and up Contents: 2 red 2 blue 2 yellow