Crew Cab Tactical backpack Outdoor Military Rucksacks Tactical Sport Camping Hiking Trekking Bag 11009 Material: Heavy-duty 600D PVC Size: 32" x 21" x 6"; Weight: 4.8 Lbs; Capacity: 31 liters- 82 liters. 5" Expandable bottom compartment for extra space.Top-load main cargo compartment with separate pocket for hydration bladder.Detachable front bag with shoulder strap. ( measures: 10" H x 9" W). Body contour shoulder straps with D-Ring for equipment attachment, sternum strap and waist belt.Main compartment with mesh zippered pocket for small accessories storage. Hydration system ready and drink tube exit hole on top.External side compression straps. Heavy-Duty carry and drag handle.Individual form pad back panel for extra comfort and maximum airflow.Grommeted holes on compartments for drainage.Large side pockets for storage.Padded shoulder strap and waist belt for comfort. The Crew Cab Tactical backpack comes with a PE board ( between back padding and bladder pouch) giving it added stiffness. This is also a great spot for maps and other flat items. It features a 5 expandable compartment on the bottom( separate from the main compartment), for when you need that extra carrying space. Comes with a hydration bladder pouch ( bladder not included) zippered in just below the shoulder straps and integrated hose ports.