I bought this memory foam dog bed, and when I had read the reviews many people said to give the memory foam mattress time to expand, which I did, however the bolster back support cushion came out of the box kind of misshapen- so I put it in the zipper as best I could and hoped it would expand to the correct shape- after over a week it never did, so I called Wayfair customer service.  My call was answered instantly, and the representative was very understanding and knowledgeable and is sending me a replacement bed immediately.  I have not always had such good customer service, so wanted to make sure to give them credit!  The bed is very sturdy and I love having the waterproof liner over the pad.