The word 'burly' doesn't do the La Sportiva Arco Climbing Pant justice. Built with a tough cotton twill and spandex blend, the Arco holds up to sever punishment but also gives when you need it to. The waist consists of the tried and true belt loops and a zipper design for easy fit customizing. A lower leg pocket keeps essentials handy but out of the way. Other cool features include an integrated toothbrush pocket, so you can clean up manky holds easily, an integrated stash pocket for small essentials, and articulated knees for a natural feel.