Rollerblade - Aero 5 (Grey/Red) - Men's: For intermediate skaters seeking excellent technical features, comfort, reliability and ease of use. PFS Trainer liner with memory fit (padding that features anatomical rubberized slow memory foam for a precise and comfortable fit) and lycra slide for easy foot entry. Soft anatomical footbed. Shock absorber in the heel. Vents for breathability. Terry cloth finish for added comfort. Closure is a combination of quick sliding laces and a buckle. Composite frame. 78mm wheels. ABEC 5 bearings.