I adore the IKEA Sultan Dromma Crib Mattress! My baby has slept soundly on this mattress and seems perfectly comfortable which I cannot say for any other mattress she's been on. I got an IKEA crib that converted into a toddler bed and now that it is a toddler bed, I've been on it as well. Very comfortable and pleasantly firm but not hard. It can keep up with my toddler jumping on it. This is a wonderful buy.