Bearing Rating: ABEC 7--High speed precision bearings designed strictly for performance and speed in mind. * Boot Style: Hard Boot--Offers exceptional support and added durability. * Chassis Material: Reinforced Nylon--A lightweight and durable chassis design. * Closure System: Buckle Closure--You can adjust while skating, very fast to put on and take off, and allows for vented shells. * Skate User: Mens