Sturdy washable 100% brushed nylon bag with three zipper compartments and one snap pocket in the back. Snap pocket can be used to carry tickets, maps, Kindles, etc. Detachable padded adjustable shoulder strap so bag can be worn crossbody. Bag also has a padded handle at the top for carrying. Net pockets on each end of bag can hold water bottles, sunglasses, etc. Bag lays flat or rolls up for easy packing into a larger case. Ring at the bottom of the main compartment to hook keys. Dimensions are approximate: 13" tall x 13" long x 5" in depth. Hard to be accurate because it expands with whatever you carry in it. Roomy and comfortable to carry. Great for travel!