For functional, expandable storage, TRU-SPEC has designed the lightweight Circadian Backpack. This 22-liter model features a spacious main compartment with a secure zippered closure that extends the full length of the pack. There is also a front storage pouch, a rear storage pouch and side pouches, all of which have zippered closures to keep gear safe and stable in transit. The hidden compartment on the back provides ample space for a concealed firearm. The adjustable shoulder and sternum straps are heavily padded and removable for maximum tactical utility. This backpack is compatible with a hydration bladder and includes universal padding on the exterior for modular attachments, creating a fully customizable pack.