Code DK9 Roller Hockey Skates boasts a QUARTER Lightweight Core-Flex Quarter build, COMPOSITION Sculptured Air Pressure Molding that contours the foot for optimal performance, LINER Moisture-wicking fabric with Reinforced Ankle Support and Deluxe Comfort Padding, TONGUE Anti-Lacebite Comfort Felt Tongue, FRAME TOUR Aluminum Powertrack Tri Coil XT 3, BEARINGS NEW Kemistry Good 5 Bearings, and WHEELS NEW Kemistry Niton All Purpose Wheels. Sizes 5-6 come with all 76mm wheels, while sizes 7-12 feature all 80mm wheels.