Yes, if your hutch is outside you need both the hutch covers - immediately over the hutch goes the thermal cover (with the Bye-Bye Fly screen attached in summer) and over that the waterproof cover with clear plastic front. I have these for my Chartwell hutch which is in an outbuilding, for fully outside the thermal cover is essential to keep in the warmth of snugglesafes and piles of hay for the piggies.