K2 Sports Varsity Aggressive 2012 Inline Skates(Black/Red) K2 Softboot , the original, delivers unmatched comfort with the best fit on the market UFS compatible frames are designed specifically for aggressive skating, think street and vert. This cuff is designed to be extra durable to handle the worst of beatings while maintaining the perfect amount of support and flex for park and street skating 55mm 88a wheels, Max wheel size 55mm. ABEC 5 bearings Beefy upper is designed to take the hardest of beatings