ULTRA DURABLE: The R3 quad skates are man-made using a vinyl material for strong skate boots. The skates have a high-impact PowerDyne Thrust nylon plate with strong metal trucks for optimal support COMFORTABLE FIT: These adjustable roller skates have an easy lace system, padded tongue, and a Velcro cinch strap that allow for easy adjustments and provide a comfortable precision fit. Check the size chart before making your purchase SMOOTH, LONG LASTING RIDE: Roller skates women and men can depend on for a smooth ride, with ABEC-5 ball bearings for long-term use. These polished, chromed steel ball bearings minimize friction to give you the best ride - perfect for any skater DESIGNED WITH SAFETY IN MIND: The boot has a low, yet precision fit to maximize ankle support, and the Velcro cinch strap helps secure the foot while skating. A long-lasting, PowerDyne Adjustable Black toe stopper provides easy braking control QUALITY FOR ANY USE: These indoor roller skates come with Sonar Cayman wheels (62mm high x 43mm wide, rated 95A hardness) that have a quality roll with the right amount of grip. This is not a children's product and is not designed or intended for use by children 12 years of age or younger