J.C.
I agree with the GoodNights. I loved them and they never leaked.
Another thing to do that will save you TONS of time and energy is to use a flat (not fitted) waterproof crib pad. Lay it OVER the sheets and it just lays flat. You can get them for under $10 at BRU or Target or Walmart. So if that gets wet, you can pull it off and wash it - no changing sheets.