This was a gift, but the season and size didn't match, so I haven't used it even once. There are no stains or yellowing. I'm giving it away. 【Comfortable Material】 Made of soft 100% polyester, it's gentle on baby's skin and provides a comfortable fit. 【Size and Weight Range】 Size 50-70cm, suitable for babies weighing 3-9kg. It's an item that can be used for a long time as they grow. - Color: White - Design: Embroidered bear face - Size: 50-70cm - Material: 100% Polyester - Weight Range: 3-9kg Thank you for looking.