Rollerblade Pro XT Men's Inline Skates - The Bladerunner Performa inline skates for Men combine style with plenty of comfort and support. They have a removable, padded liner and tongue for breathability and cushioning and a molded, rigid frame that house 76-mm wheels and ABEC 7 bearings. The chassis is made from molded Reinforced Nylon and backed up with well padded removable Liner that gives the skater much needed support and feel. Chassis: Reinforced Nylon, Liner: Padded/ Breathable, Skate Type: Recreational, Number of Wheels: 4, Wheel Brand: Rollerblade, Wheel Configuration: 78mm - 78mm - 78mm - 78mm, Wheel Durometer: 78A, Bearing Type: ABEC 7, Bearing Size: 608 - Standard, Chassis Material: Composite, Brake Type: Standard, Closure System: Buckle, Powerstrap, Laces, Model Year: 2008, Product ID: 118243