Jefferies Socks Mens Military Combat Uniform Rib Crew Boot Socks 3 Pair Pack has many features that include: half cushion foot for extra comfort and impact protection, medium-weight for all season wear and rib top holds in place all day and creates optimal support for lasting all day wear. Available in plus size, extended size, big and tall size x-large 13-16. Knit with breathable cotton to keep feet comfortable, dry and cool. Colors come in black, foliage green, olive green, desert sand (khaki tan color), and coyote brown. Black, foliage green, desert sand, and coyote brown have military approved "uniform boot" printed on foot of 1 sock. Olive green does not have "uniform boot" printed on foot of 1 sock. Made in USA.