The Patagonia 36L Terravia Pack is a lightweight pack for quick, hut-supported adventure. The breathable, lightweight airmesh on the raised back panel and the underside of the shoulder straps keeps you cool and comfortable throughout the day, and the roll-top closure expands beyond the pack to carry extra gear or can be rolled down and cinched for lighter loads. An internal frame provides lightweight support for carrying a full pack. Equipped with two hip-belt pockets, a top pocket at the nape of the neck with a key clip, and a front drop-in pocket, along with a zippered lid and internal security pockets. An internal hydration reservoir sleeve and pass-through sit between the shoulder straps, allowing the tube to be routed over either shoulder, while dual side pockets fit full-sized water bottles. Exterior trekking-pole loops offer easy access to poles during tricky terrain and out-of-the-way storage when not in use, and a removable rain cover is included, stowing in an exterior pocket at the bottom of the pack.