PUMA - Fass (Imperial Blue/Blue Nights/Metallic Silver) - Men's: A lightweight model built on PUMA's performance spike last suitable for 55-400 meter and hurdle events. Breathable mesh and durable synthetic leather upper. CM-EVA midsole enhances running motion and improves durability. idCELL in the heel provides a nice ride and great cushioning comfort. EverTrack outsole provides higher abrasion resistance.