Size medium by Slote & Klein. Leather is excellent with only very minor scuffing in a few places. "USN" stamped into the leather. Lining very nice/clean. Chamois donuts very good. Fully labelled. Retains silk drawstrings. Good strap with chocolate brown velvet pad. No facilities for oxygen equipment. Excellent, lightly used or possibly unissued helmet. Stock code H5931.