100% cotton. Loopback fabric. Œ fastening. Kangaroo pocket. Ribbed cuffs and hem. Regular fit. The Beams Plus Half Zip Sweat is indeed a zip-necked sweatshirt made from some ridiculous plush loopback cotton. This thing really speaks for itself, so well ease off the Don Draper marketing razzle dazzle and let the photos do the talking.