I know this one is in the family for at least 25 years, I don’t know if that consider vintage already. I like it very much so I kept it but haven’t wear it since my college years. It says size large, I think is for kids size large, no inside tag to tell the fiber contents, but For sure it’s not 100% cotton, it’s some type of mix of cotton/ man made material. It feels really soft and does not generate lint balls. There are few barely noticeable yellow stains, I do think it can be easily removed. Overall , It’s a great condition snoopy sweater 🥰.