The BDS Tactical Modular Stacker 4 Magazine Pouch is designed to carry up to 4 GI issue 30 round magazines for the AR-Colt series rifles. Each pouch has a 1.5 inch elastic band adding the perfect amount of tension on your magazines. The adjustable bungee lid has a 1" inverted pull tab for easy access especially when wearing gloves. If you select the full lids they secure with hook and loop as well as a snap. There is non slip fabric on the back sides of the inverted pull tabs. These are removable lids. The front and sides are covered with 2 rows of PALS webbing for mounting optional modular pouches. There is a large grommet on the bottom of the pouch for excellent drainage. The Stacker 4 Magazine Pouch takes up 4 across, and 3 rows down of PALS webbing and attaches with the BDS Tactical Stacker Lock snapless modular locking system.