PlayWheels Team Umizoomi Kids Roller Skates with Knee Pads - Junior Size 6-12 Adjustable roller skates and knee pad set that grows with your child Convenient thumb screws allow for 2-in. adjustment from Junior Size 6-12 with no tools required Toe brakes included on both skates for easy slowing or stopping Impact-resistant PVC knee caps ensure extra protection plus easy size adjusting with hook and loop straps Recommended for ages 3 through 6 years; weight capacity of 45 lbs.