The Patagonia Snow Drifter 30L Backpack is built for full day touring, with room for extra layers, food, liquids and skins in addition to your avalanche essentials. With a zip-open back panel for access to your stuff without opening the lid, a separate compartment for your shovel and probe, external helmet attachment, and diagonal/vertical/A-frame options for carrying your sliding tools, the Snow Drifter 30 is a clean and versatile backcountry companion.