My 6 and 9 year old girls had been complaining for a few weeks that their 4 year old spring mattress was uncomfortable. It was time to buy new mattresses and I made the right choice. The mattresses came shipped UPS during an ICE STORM!! I opened the boxes, cut open the plastic and let the mattresses do what they do. By that night my girls were sleeping soundly and the next morning they were singing "mommy" praises! We've had them for a month now and they sleep so well at night and wake up rested. This is something a parent can't really put a price on but thank goodness they were affordable too!