The Endura SingleTrack Bib Liner II is a top performance bib liner designed with rapid wicjing stretch fabrric for optimal comfort, and has lightweight mesh panels for enhanced ventilation. Includes a 500 Series Mountain, stretch antibacterial pad with highly breathable reticulated foam Endura SingleTrack Bib Liner II Features Rapid wicking stretch fabric for optimal comfort Lightweight mesh panels for enhanced ventilation Double layer comfort leg gripper 500 Series Mountain, stretch antibacterial pad with highly breathable reticulated foam Tall rear bib pockets can house back protectors or bladders Additional rear bib pocket for essential and gel leg pocket Vertically mounted Clickfast™ system provides height adjustability Fully printed side panels for graphic impact Supercharge your baggy short's comfort and performance