The pocket is lined with loop to allow customization with various hook backed pouches. In the main compartment is where the action is! On the side that's away from your back, there are two pockets with bungee keepers sized for 5.56mm rifle Mags.On the back panel of the main compartment there are three hook backed adjustable keepers. There are two additional flat straps to secure items to the pack. There is and extender on the bottom of the main compartment. The waist belt and pack straps are padded and have air mesh on the surfaces that touch the body. The pack straps have load lifters and are adjustable for the majority of torso lengths. The waist belt has storage pockets on them as well.