This Convertible Sling Pack offers a very lightweight solution for packing it all in. Top loading main compartment is a full 1093 cubic inches. Contents are protected during inclement weather by the adjustable, cinch down lid with an easy side release open-and-close attachment. Two(2) external side mesh pockets carry a water bottle and other often needed items. Front pouch pocket is nicely gusseted and has an additional zipper mesh flat pocket. When folded into it’s own compact 10" x 6" x 1" self- carrying pouch, it tucks neatly away into any larger travel case for the adventure ahead! Hidden waist belt on pouch lets you use as a waist pack too.