There's nothing good or bad about that. I bought this to fit two 2" thick foam pillows to make a car camping mattress. The size of the crib is perfect for my 75" x 30" foam pillows but there is plenty of room for more thickness, I think it could maybe fit up to an 8" mattress, definitely a 6" mattress. The material is ok, appears to be waterproof or at least splashproof. It feels good, a little rustles when I'm lying on it, but it won't be noticeable when I have sheets, blankets, etc. Seemed a bit expensive for what it is, I paid $30 but overall good product and did what I wanted.
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