The Men's Patagonia Dirt Roamer Liner Bib is an ultralight and breathable bib for mountain biking. The form-fitting design is crafted from 79% recycled nylon and 21% spandex jersey, delivering powerful stretch to keep everything in place during rides. It features a center-back pocket for a water bottle, two stretchy thigh pockets that align with the pass-through pockets on Dirt Roamer Bike Shorts and Dirt Craft Pants, and off-road-only near-transparent mesh thigh panels that help release heat on climbs or hot days. Soft silicone leg grips prevent slipping and chafing while keeping the chamois securely positioned, and the low-bulk, 3D, 3-layer premium Italian chamois pad provides protection, breathability, comfort, and durability on long-distance rides.