Castelli engineered Espresso Doppio fabric for comfort and a perfect fit Raw-cut leg ending with silicone gripper Stretch mesh bib straps for ventilation and comfort Pocket on rear for added storage Progetto X2 Air Seamless seat pad for all-day comfort Reflective tabs for increased visibility.Your new favorite bibshort.Designed and engineered with an emphasis on comfort and performance, this short is the best short for most of your rides.