Make sure you look at the measurements of the bag cause I thought it was going to be just a bit bigger than a Jansport. I was definitely wrong. I can fit my riot helmet and gas mask with a canister inside this thing and still have room for my snacks inside the other pockets!!! I love this bag for doing just that. It's durable and has a ton of pockets where I can store stuff. I love the velcro on the front for motivational patches, too. :)