DURABLE DESIGN The kangaroo shoes feature rugged rubber grips on the sole for better traction It also features a heavy duty frame and secure adjustable fastening straps STAYING FIT The bouncy boots for kids is a fun way to keep in shape These shoes will help you burn calories reduce body fat and strengthen your legs and thighs muscles SAFETY To prevent injuries we recommend always using a Helmet and protective gear while jumping Children must be supervised at all times by and adult while using the bouncy shoes GREAT PARTY IDEA Invite some friends and jump together or buy multiple pairs and use it for a party activity Suggested age 5 and up GREAT FOR ALL CHILDREN The Jumping Shoes come in the following sizes Small 3134 EU Weight limit of 45 80 Lbs Medium 3538 EU Weight limit of 55 100 Lbs Large 3942 EU Weight limit of 99145 Lbs