Patagonia designed the Atom 8l Sling Bag with a single strap and teardrop shape that stays put whether you're hiking to a lake or commuting to class. This simple design enables the bag to be accessed without having to take it off. Just spin it around to your chest and you can take whatever you need from the main compartment. Patagonia also added 3D spacer mesh to keep shoulder strap and back panel comfortable and breathable. The Atom's recycled polyester is strong and light, and its DWR coating helps keep gear dry in the face of light rainfall.