The Red Rock Outdoor Gear Engagement pack is a traditional military tactical design. With the detachable butt-pack attached, this backpack is a roomy 26L. Without the butt-pack attached the Engagement makes a perfect everyday carry backpack. This bag is covered top to bottom in Molle webbing for customizing with pouches and attachments. This pack is supported with two contoured shoulder straps, a sternum strap and an adjustable waist strap.