Patagonia Atom Sling 8L - Canyon BrownPatagonia's Atom Sling grips your back with a climbers tenacity. It carries the fundamentals with all the comfort of a backpack, the convenience of a shoulder bag and the ergonomic, low profile performance of a couriers tote. The Atoms teardrop shape keeps the pack right behind your shoulders where it stays out of the way when youre moving through crowded streets and subway terminals. When you need to grab something, the single strap design lets you