NONE of the 3 sleepy's mattresses I purchased held up to the quality I was told I purchased. In fact, the first mattress, bought for my 3 year old at the time, $550 twin national name brand, sunk in the middle after 18 months. She was approx. 25 lbs at the time. They would not return or exchange it because of there was a 4" diameter "water mark", even though the sink hole in the center was obvious. We ended up throwing it out. They said it was the manufacturers warranty, not theirs and the warranty is void with any stain. Were... read full review »