What do women carry in those humongous purses?

So I’m at the park with my wife and kids. The kids are off playing while the Misses and I are on the park bench conversing and enjoying the tranquility of it all. Later, I notice two women walk up – both sporting those super-sized purses that have been in season for a while. I never paid it much thought before, but I’m kind of curious now. So, what exactly is all that room for?