These adjustable skates move up five sizes so that as your child's foot grow, you can increase the size. What's great about this is they can easily be handed down to younger siblings too who won't mind wearing used skates because they look great and are built to help them become awesome skaters. The Boa Lace will have them locked in and ready to cruise in no time. Built with the F.B.I. Frame, this frame will absorb road vibrations and make it easier for the young skater to get acclimated to skating. The K2 Marlee BOA Inline Skates are great for the new young rider who you want to excel at the sport of skating and plan for them to skate for years to come.