Antokelly, that's a good question. It's actually a 2-way zipper, so I don't need to unzip it all the way to get to the opposite side. Some folks also add a divider or something in the middle that connects to each side to keep it from getting too fat in the middle. I may add one if I feel it's getting too thick. But it would seem something to keep both sides close together would also keep everything from falling out when you open it.