Lifekind certified organic wool mattress cover, crib size. Use as a waterproofing layer under your baby's sheets to protect mattress. Standard crib size, lay over mattress and then add fitted sheet. I see some minor spots, please see last listing photo. They're very, very faint. A good day in sunshine outside might remove them. This is mine, bought new. It has been lovingly handwashed/air dried and I don't use any scented or dyed laundry products. This mattress cover is in very, very good condition and is ready for a new baby. I also have a basinet sized wool cover and a crib sized flannel cover, as well as crib-sized bedding, all organic for sale.