I brought two of these sets for my neices 5 & 3 yrs. old. I was alittle hestitant at first to buy mattresses on line. When they came they had no backside( which mean you can't flip them over). Since they where for little girls it was ok. I layed on them and they where so comfortable and felt like a more expensive set would feel. I like them for kids or a guess room only because, you can't flip them over if , you where an adult using them everyday. It's worth the money and well made.