ALL NEW JETSPEED FT870 ROLLERS - HEAT MOLDABLE! BOOT MATERIAL: SYNTHETIC COMPOSITE Ergonomic fi t, additional stiffness and support, lightweight and durable. LINER: HD MICROFIBER High resistance to wear with added EVA layer delivering fi t and comfort deeper into the boot. ANKLE PADDING & COMFORT: ADPT MEMORY FOAM Multi-layered confi guration with denser ADPT Memory Foam ankle pads creates a comfortable and snug skate interior. TONGUE: F7MM FELT TONGUE WITH INJECTED LACEBITE Single layer construction with injected lacebite protection. FOOTBED: CCM ORTHOLITE Ultra-lightweight and enhanced comfort. CHASSIS: TWO PIECE ALUMINUM Two-piece aluminum frame boasting a lightweight, ideal weight to strength ratio. WHEELS: RIZON Hi-Lo Rizon wheels, suitable for outdoor surfaces, enabling agility and speed through the staggered wheels setup BEARINGS: ABEC 7 ABEC 7 roller skate bearings offer great precision, suitable for high speeds and competitive play.