THE MEN'S BASE LINER SHORTS ARE CONSTRUCTED WITH LIGHTWEIGHT, BREATHABLE MATERIALS AND MOISTURE-WICKING SIDE PANEL MESH, MAKING THEM ULTRA-COMFORTABLE UNDER WHATEVER BAGGY SHORTS YOU CHOOSE. Meanwhile, added details like the soft-brushed elastic waistband and the leg gripper ensure a skin-like fit thats comfortable from the time you roll out of your driveway at dawn to when you return at dusk. And to make things just a little bit easier for you, the Men's Base Liner Short features a fly opening so you can easily take care of business while you're out on the trails.