The new Ascensionist line of packs from Patagonia is designed to fit everything you need, and nothing you don’t. The best thing is how it expands to meet your needs. Perfect for a day or two when you want to move fast and light, the Ascensionist 35L is a lightweight, but deceptively rugged due to its 210 denier, double ripstop construction. The asymmetrical collar opens wide and closes fast in a single motion, and provides extra storage.  Good as a ski pack in winter as well, and available in 25L and 45L capacities.  $149 patagonia.com