Whether you're a derby veteran or rookie the Riedell Blue Streak Sport Pro is made to the highest quality and standards. The Blue Streak Sport Pro includes Kango leather, nylon cinch strap, and waxed laces to make the boot more secure around your foot during use. Radar 95A Presto wheels spin around Kwik Swiss Nitride bearings that are pre spun with high performance oil and have a friction resistant retainer. An extruded aircraft-grade aluminum Reactor Pro Series plate uses a 15-degree kingpin angle & high rebound urethane cushions. PowerDyne Moonwalker natural toe stop uses a grippy rubber compound to provide plenty of stopping force. [+]