We designed this as a 3-1-1 toiletries bag for air travel. The Clear 3D Organizer Cube is a one-compartment organizer cube with clear front and back panels. A simple and unobtrusive plastic hanging hook inside of the Clear 3D Organizer Cube allows you to hang it on a towel rack, cabinet, wall hook or the like. The Clear 3D Organizer Cube was designed specifically to meet the TSA 3-1-1 liquids-program requirements. It works great for that purpose and, unlike a ziplock bag, is reusable and guaranteed to last through years of use as a toiletries kit when you're traveling and as an everyday organizer bag when you're not. We give you the option of adding a Shoulder Strap to the Clear 3D Organizer Cube, allowing you to hang the Cube from a towel rack or doorknob, or wear it over your shoulder while waiting in the airport security line. The shoulder strap is the same strap included with our Side Effect bag: 5/8" nylon webbing, adjustable, with plastic snaphooks (no pad).