The Endura Padded Clickfast Liner is an interchangeable cycling undershort that can be worn under any shorts or pants but also snap into Endura's loose fitting cycling shorts and pants. Made with a rapid wicking and fast drying Polyester/Spandex stretch mesh fabric for comfort. Stretch technology antibacterial 200-Series chamois pad. Soft elastic comfort hem and waist gripper. Anatomic cycle-specific fit. Men's Sizing (Waist): XS: 29-31", S: 31-33", M: 33-35", L: 35-37", XL: 37-39", XXL: 39-41".