Watch him learn to skate as he grows in the Stryde Lighted Adjustable Inline Skates. Grippy, bouncy indoor/outdoor lighted polyurethane wheels with speedy Silver-5 bearings ensure a smooth, quiet and confident ride. Designed to expand with growing feet, the Stryde adjusts up to four full sizes at the push of a button. Size small adjusts from children's shoe size 11J to 1 and has 64 mm wheels. Size Medium adjusts from size 2 to 5 and has 72 mm wheels. Roller Derby is America's Skate Company since 1936.