Roller Derby STR Seven Quad Speed Roller Skates Black Adult Size 6 Get rolling with these Roller Derby STR Seven quad speed skates! Featuring a classic low-top boot design with a lightweight chassis for easy maneuverability, these skates are built for both rink and street use. The PU foam-cushioned boot keeps feet snug and comfortable, while the traditional lace-up closure plus hook & loop power strap ensures a secure, adjustable fit. Equipped with 58mm x 40mm urethane wheels and Bevo Silver-5 race-rated bearings, they deliver a smooth blend of speed and control for skaters at any level. A great pick for anyone getting into skating or looking to replace a well-loved pair — true to U.S. shoe sizing. Pre-owned, showing normal signs of use — please review photos closely and note wheel/bearing condition before purchasing.