big, saggy, droopy fit. I had an older style that was flannel on the outside and it wicked to the outside immediately, even though they were advertised back then as "won't leak" or some other bogus claim. It was not anything close to an AIO, and the fact that it had a waterproof lining inside meant nothing. It might as well have been a fitted. The new ones supposedly are a non-absorbant material on the outside, but the fit is probably the same.