Purchased new and used with a gauze blanket or swaddling blanket. Never used for diaper changes. There are no visible stains, but the non-woven fabric cover of the mattress inside the cover has torn slightly due to repeated washing. There are no issues with use as it's in an unseen area, but please check the photos before purchasing. Comes with a case. Non-smoker, no pets. Detergent: additive-free, Shabondama Snow soap. No air fresheners in the house. A bed-in-bed that supports a baby's comfortable sleep with soft cushion material. - Brand: DockATot - Color: Fog Grey Chambray - Size: Bed-in-bed - Features: Soft cushion material - Usage: Perfect for putting babies to sleep Thank you for looking.