ADJUSTABLE INLINE SKATES: Enhanced by multi-size push button adjustments, these adjustable inline skates allow for effortless adjustments to ensure proper fit for growing feet. Adjusts 4 sizes (1-4) and (5-8) FOR THE YOUNG SPEEDSTER: These skates are perfect for beginner to intermediate skaters who are looking for torsional stiffness and superior performance. Developed for fitness and designed for fun. SECURE COMFORT: National Sporting Goods presents a nylon mesh inner boot that delivers breathability, 2-piece vented boot with pivoting collar, speed-lace closures with micro ratchet buckle, and power strap. STABILITY & CONTROL: These high-quality speed skates provide excellent traction and stability, featuring nylon chassis with 70 mm 82a high-rebound urethane wheels with ABEC-3 rated speed bearings.