4 separate compartments. The outer pocket has credit card slots and a zippered small pocket. Inside, you’ll find an open compartment for easy access, the 3rd compartment zips up securely and has a small zippered pocket, and there is a quick access phone compartment on the back. Lightweight, water-resistant nylon. Interior organization and multifunctional pockets The strap has an adjustable 29" drop. 7 1/2 x 5