Patagonia Aton Sling 8L Specs & Features 100% Recycled Polyester with DWR Finish All fabrics, spacer mesh and static mesh are 100% recycled (stretch mesh is 72% recycled), and the body fabric has a DWR (durable water repellent) finish that's made without PFCs (perfluorinated chemicals) Ergonomic, Single-Strap Harness Asymmetrical harness carries weight close to the body for all-day comfort, with a zippered stash pocket on the strap Zippered Front Pocket Zippered front pocket keeps a phone or another frequently used item close at hand Divided Main Compartment for Internal Organization Zippered main compartment has an internal divider to provide dedicated storage for easy access Tuck-Away Storage Straps Tuck-away front straps can be used for carrying a yoga mat or an extra layer Pack Volume Pack volume is 8 liters