Adjustable 4 size fit system utilizes an easy to use push-button mechanism; Kids and parents will benefit from its function and convenience; Support and stability is provided by the lightweight Micro structure; Enables the perfect amount of forward flex and comfort for gliding around the rink or pond; Comfortable liner with Thinsulate to ensure feet stay warm and cozy; Stainless Steel blades hold their edge longer, prevent rusting and deliver consistent performance