There is one main zip compartment under the flap. It has lots of room for storage. There is also a back wall security zipper. Underneath the flap, there is a foldout full zip organizer. There are five credit card pockets and a pen holder in the organizer. There is a zipped pocket and one open pocket as well in the organizer. On the front of the organizer are two cellphone/PDA pockets that can also be used for glasses with a hook Velcro closure. The strap is fully adjustable to comfortably fit your shoulder or across the body. Dimensions 9"× 3"× 10" SKU: PW-20148 Derek Alexander Unisex Everyday/Travel Cross-Body Shoulder Bag - Black (PW 20148)