There is a zippered pouch at the bottom of the pack that the flap is stored in. It's heavy nylon and very strong and has 2 straps and buckles that snap to the top of the pack once you've loaded your quarter in it. It seems strong enough and big enough for an elk quarter but I haven't packed one with it myself. I do have friends that have the same pack that have though so I know it'll work for that. It's an internal frame pack with 2 aluminum bars inside that give it support. Very comfortable and rugged and the best warranty I've seen. I love mine and it's not big or bulky. If you wanted to use it for more than day hunting you might look at their larger models. I could probably use mine for an over night pack but it's not big enough to carry more than a couple days worth of gear. If you want I can take a few pictures of mine to show you.