" Fit & Design: 3 WHEEL DRIVE (3WD) HIGH PERFORMANCE - Increased lateral support for faster skating and enhanced, form-fit stability while training FLEX & LATERAL SUPPORT - Higher cuff for added balance and secure foot hold; 45deg aluminum cuff buckle, strap and speed lace closure system Technology: ATHLETIC MESH KNIT UPPER - High-comfort, breathable liner with additional padding in tongue/ankle 3WD TWINBLADE ALUMINUM FRAME - Superior 290mm/11.4" frame with a lower-profile design for increased speed and maneuverability Additional Details: ROLLERBLADE SUPREME WHEELS - 110mm/85A wheels and SG9 bearings reduce wear and maximize speed "