1000-Denier water and abrasion resistant light-weight ballistic nylon fabric. Teflona fabric protector for grime resistance and easy maintenance. YKK high strength zippers and zipper tracks. UTX-Duraflex nylon buckles for low sound closures. Triple polyurethane coated for water resistance. High tensile strength nylon webbing. High tensile strength composite nylon thread (stronger than ordinary industry standard nylon thread). AS-100 high grade closed-cell foam padding material for superior shock protection. Internal seams taped and finished. Paracord zipper pulls. Stress points double stitched, Bartacked or Box-and-X stitched for added 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 pictures for configurations. Shoulder strap double backpack straps with 3/4-Inch sternum strap. Handle reinforced drag handle design. Approximate overall volume 750-Cubic Inch. Hydration fits up to 50-Ounce and reservoir (not included).