Cole-TAC Daypack, Backpack, 18L Main Compartment, 500D Cordura Nylon, MultiCam Black, Padded Mesh-Backed Shoulder Straps SP1025 Cole-TAC's Daypack resulted from an experiment in constructing an incredibly lightweight" simple pack suitable for a day of hiking" shooting" hunting" or other outdoor activity. Designed to be as compact as possible" the Cole-TAC Daypack weighs only 10.4 ounces while providing up to 18 liters of internal storage space. The 500D Cordura construction not only makes our Daypack strong and durable but also allows you to fold and stow the Daypack in a large pocket when not needed.