Tactical Assault Gear's Sentinel pack is a made with 1000 Cordura nylon and lined with 440 weight pack cloth. This pack was specifically made for sustained field operations when a "RUCK" is not needed, or is just too large.
Features:

Large hydration port so you will not have to take your mouth piece apart. Two (2) large antenna ports/hydration ports. Pockets on the inside of the pack for two (2) additional 100oz. hydration bladders (not included).
Left side of the pack has a large pocket with compression straps that can be used for a ground pad, rifle, shotgun, or assault rifle.
Outside of the pack is covered in PALS webbing. Small utility pouch is sewn to the outside of the pack. Bottom of the pack has (3) drain holes with additional PALS webbing.
Internal aluminum stays offered separately.
Top compression straps and load levelers. Made in the United States and backed with our lifetime warranty.
Dimensions:

Main Compartment: 20 L x 13.5 W x 6.5 D total cubic inches: 1,755.
Middle compartment: 18 L x 13.5 W x 3.5 D total cubic inches: 850.
Outside Utility Pouch: 6 L x 11 W x 3.5 D total cubic inches 231.
Pack total: 2,836 cubic inches.