Push button adjustability maximum comfort and great control the rolleblade spitfire kids skates have it all with their 4 sizes expandable shell simply push in the adjuster button near the heel slide the toe box forward and you39re good to goshellupper spitfire 4 sizes expandableliner performance junior linerclosures cuff buckle 45 degree strap lacesframe monocoque composite max 4 x 76mmwheels rollerblade 4 x 72mm80abearings sg3brake removable brake attached at the rear of t