The Men's Patagonia Dirt Roamer Liner Bib is a mountain bike liner for trail days. It all starts with the low-bulk, 3D, 3-layer Italian chamois, delivering protection and comfort during hours in the saddle. The bib-style won't slip, preventing any plumber's crack when leaning deep into the handlebars. Designed with mesh vent panels to keep heat out, plus three pockets for stashing a water bottle and energy gels.