Genuine U.S. Vietnam War era long wool socks used by the Army/USMC, this pair of socks are new old stock unissued and sized extra small 7½ - 8½ US (7 - 8 UK, 40 - 41 EU). In addition to being used as socks they were used to carry extra ration tins, and also used to stuff the bottom of the M1956 universal ammo pouches as the 20rd magazines would sit too low.