With the award-winning Moon Shoes, kids have incredible fun as they jump with anti-gravity effects while developing balance and coordination. Made of quality, high-density plastic, with adjustable Velcro® nylon straps. Moon Shoes feature a self-centering shoe platform with a non-skid grip surface for sure-footed, high-bouncing thrills. Weight limit 180 lbs. Size 13.5"l x 9.25"w x 7.5"h, fits shoes up to men’s size 9, Weight 2.75 lbs. (Age 7+)