Shell - Glass fiber reinforced HQ Polypropylene; Closure - Memory buckle, velcro power strap, fast lacing System B * Boot - Easy Entry System, Progressive Anatomical Padding * Frame - LiteDesign Extruded Aluminum * Wheels - Roces 80mm 82A; Bearings - ABEC 5 with aluminum spacers * These skates come in Womens sizes and are true to size.