The roller derby boy's hornet pro adjustable in-line skates are conveniently adjustable with a lace-up and buckle closure system. The reinforced ankle support and aluminum frame provides comfort and stability. These skates have 4 wheels made of cast urethane with abec-7 bearings for smooth gliding action, as well as heel brakes. These outdoor skates are recommended for beginner to intermediate skaters. Available in standard children's sizes. Ages 3 and up.