1000-Denier water and abrasion resistant light-weight ballistic nylon fabric. Teflona material protector for grime resistance and simple maintenance. YKK high strength zippers and zipper tracks. UTX-Duraflex nylon fastenings for low sound closures. Triple polyurethane coated for water resistance. High tensile strength nylon webbing. High tensile strength composite nylon thread (stronger than common industry basic nylon thread). AS-100 high grade closed-cell foam padding product for remarkable shock security. Internal seams taped and completed. Paracord zipper pulls. Stress points double sewed, Bartacked or Box-and-X sewed for included strength. Product features, main compartment: 13 x 9.5 x 4.5-Inch, internal mesh divider and zipper pocket, YKK zipper closure. Front upper pocket 8 x 3.5 x 2-Inch. Front lower pocket 8 x 7 x 2-Inch with divider and organizer pockets. Side pocket 4 x 3 x 1.5-Inch zipper opening. Side sheath 5 x 2 x 1-Inch zipper opening. Modular webbing front, sides and on shoulder straps – see photos for setups. Shoulder strap double backpack straps with 3/4-Inch sternum strap. Manage reinforced drag manage design. Approximate total volume 750-Cubic Inch. Hydration fits approximately 50-Ounce and storage tank (not included).