Endurance-level comfort built around the Progetto X2, Castellis top seat pad. The Castelli Endurance 3 Bib Shorts are a traditional short that will prove a firm favourite with anyone looking to ride far and in comfort. The Progetto X2 Air Seamless seat pad consists of two separate layers: a soft stretchy layer that sits next to your skin and prevents any rubbing, and a perforated cushioning layer with two separate density foams along with breathable perforated gel inserts. These layers work together to keep comfort levels at an all-time high, for the pro peloton and dedicated weekend rider alike. A pro-level seat pad demands a great fit, and thats exactly what the Endurance 3 has. The anatomic cut and mesh bib straps hold the seat pad in just the right place and seams around the hip area create the perfect on-bike shape. The Endurance Evolution fabric provides optimum muscle support and feels dry when youre riding in the heat of summer or even working up a sweat on the turbo. Key Features Endurance Evolution fabric Anatomic cut for perfect on-bike fit Mesh bib straps and back Progetto X2 Air Seamless seat pad Giro3 leg grippers 15 38C / 59 100F Weight: 186g (Large)