Pacer XT-70 Kids Roller Skates Man Made Boots: Adjustable shell with removable comfort lining and buckle closures Plate: Plastic, adjustable plate Wheels: Polyurethane (injection) Wheels Bearings: 608ZB sealed bearings Sizes: Boy's black small 12J-1, medium 2-4, Girl's white small 12J-1, medium 2-4