Uniqlo U, size M. This is a brown brushed jersey mock neck! The size is M, and it's a little small for me. I bought it, but only wore it once, and it's been stored at home since then, so I'm selling it! #UNIQLOU #UNIQLOUMockNeck #UNIQLOMockNeck #UNIQLO #UNIQLOMen #UNIQLOWinterClothes