Open the Stingray EDC Pack at the top, left or right side of the main compartment. The zipper extends to the bottom of the pack, allowing the user to lay it flat if needed. The Stingray EDC Pack holds up to 1400 cu. inches of great and is in three colors. This pack is constructed of 500D nylon and is built to withstand anything. Plus, a padded compartment at the back accommodates either a laptop or hydration reservoir.