Main fabric: 92% polyester 8% elastane

The compact design does not compromise ventilation

Made of nylon

The yoke at the waist and the back part of the leg are made of a very lightweight

castelli endurance bibshort w sunglasses Main fabric: 92% polyester 8%Endurance level comfort for every ride with Castelli's most comfortable seat pad. Endurance Evolution fabric provides optimum muscle support and feels drier in nearly all conditions Anatomic cut for perfect on bike fit Bib straps can cross in front or back and are extra elastic, allowing short to be pulled down for pee stops without removing bibs Womens specific Progetto X2 Air Donna seamless seat pad for even greater comfort and improved airflow