I used two of these, alternating between them, for about three months. There are no stains or marks, but they show general signs of use. My baby slept very well when swaddled in the Konny Swaddle Pouch, and it was extremely helpful. I'm selling them because my baby has outgrown them. I'm selling to someone who doesn't mind used items. - Brand: Konny - Size: 6M - Material: 90% Modal, 10% Elastane - Features: Zipper closure Thank you for looking.