I bought 2 mattresses for a bunk bed for my kids. From the reviews from other people I understood that this mattresses have some kind of smell for few days. I took mine outside for a week and still have a very strong chemical smell. I am so disappointed that I wasted my money on them. I can't even return them as I thought the smell will go after a week outside and I through away the boxes. Please don't buy them, especially for your kids. I only give a star for delivery.