Get ready for take-off because the K2 radical 90 flies on asphalt! Radical 90 is designed for experienced skaters, but don’t be intimidated. If your balance is good or you have a couple years of experience skating this skate will thrill you. The Radical 90 comes with a Longmount Frame for stability at the speeds generated by 90mm wheels and ILQ-9 bearings. The Radical 90 is seriously lighter than most skates in its class due to K2’s top secret boot molding. Whatever that shiny silver stuff is, when you slide one on, the heat moldable super comfy lining and light weight makes it feel like an extension of your foot. Radical Cuff Lower Cuff Than Enhanced Stability - Provides More Freedom of Movement Aluminum 4x90 Longmount Frames 90mm 85A Wheels ILQ-9 Bearings Break Mounted on Skate