Get a contoured, comfortable fit with Montrail's Enduro-Sole removable footbed. Designed for medium to high arches, this moldable, removable footbed is fashioned from a flexible molded base with thermo-moldable foam that can be molded into the exact shape of your foot. The synthetic abrasion-resistant top sheet wicks away moisture. Abrasion-resistant synthetic top sheet. Weight: 1.5 oz.