Features: Top-of-the-line quad skates designed for style and performance EZ Twist Knob allows you to adjust up to 4 full sizes Made for both beginner and intermediate skaters High top boot design with great ankle support Comfortable padded lining for ankle High impact chassis with PU Cushions for shock absorption Designed for precise and controlled turning Fast and smooth rolling Silver-5 Speed Rated (carbon) bearings Urethane 54mm x 32mm wheels Designed for both indoor and outdoor use