The inside is lined with short-pile fleece. I bought this last year, but my child doesn't get cold easily, so they wore it less than 10 times. The bear on the bottom is cute! Size: 3-6 months There are no major stains, but the neckline might be slightly yellowed... (Personally, I can't tell at all) I think it's still wearable ( ˶ˆ꒳ˆ˵ )