Patagonia designed the Atom Sling Bag with a single strap and a teardrop shape that stays put whether you're hiking to a lake or commuting to class. This simple design provides a lot of convenience for you, since you can access the bag without having to take it off just spin it around to your chest. Patagonia also added 3D spacer mesh to make the shoulder strap and back panel more comfortable and breathable. The Atom's recycled polyester is strong and light, and its DWR coating helps keep your gear dry in the face of light rainfall. It also features adjustable buckles that let you lash more items to the pack when it's full.