Rollerblade - Aero 9 (Black/Yellow) - Men's: For casual fitness skaters wanting maximum comfort, high-end technical features and great performance. Specialized liner featuring CoolMax. Lycra slide for easy foot entry. Professional footbed created with two different materials: one structuring base material, stiffer at the rear and one surface material for comfort. Shock absorber in the the heel. Vents for breathability. Anti-bacteria surface treatment. Terry cloth finish for added comfort. Bio dynamic triforce shell. Uses "Form Fit", a special foam that features an anatomical, rubberized memory foam with slow elastic "return" providing excellent support and a comfortable custom fit padding material that provides a customized fit for maximum comfort. Closure utilized Total Fit System and a buckle. Aluminum frame provides high torsional stiffness and maximum weight reduction. 80mm wheels. ABEC 7 bearings.