Great for muscle development, stimulates creativity and promotes active lifestyle. * Tunnel: 19" x 40" Vibrant yellow material w/see through meshing design * Each ball measures 6.5cm and can withstand ~150 lbs. The balls are designed to fit a child"s hand while not being too big or small. * Easy to set-up easy to store. Comes in zipper tote. * Great for indoor playtime.