These are fleece-lined sarouel sweatpants from FRAPBOIS x CHUMS. The size is 1, which I believe is a size S. There is a zipper, but the button does not open. I've only worn them for 2-3 days, but due to the fleece lining, there is some pilling on the white part of the inner thighs. These items have been stored at home for a while. Please consider this before purchasing. #FRAPBOIS #CHUMS