Even the rockiest trail sections don't stand a chance against this short's impact-absorbing chamois. --Gearhead Expert AlexFrom singletrack rides to bombing down the bike park, the Backcountry MTB Bib Short Liner is a staple in our gear closet. Featuring a stretchy and compressive nylon fabric, the MTB Bib Short Liner is super comfortable and gives us the support we need on the bike. These liners have a built-in low-profile chamois pad to provide cushion and improved comfort, and silicone leg grippers keep the shorts from moving around as we ride. To finish off the MTB Liner Shorts, we added mesh side panels to provide airflow, keeping us cooler and more comfortable as we ride.