From the French couvrir (to cover), also from the hunting term covert (a thicket that is a cover for game), covert cloth is true to its name—rugged and protective. It is woven in a twill weave and is usually of two colors for a marled effect. Originally always wool, worsted, or a wool/silk blend, covert can be made from manufactured fiber alone or in a blend with wool, sometimes also cotton.
Uses: Coats, suits, riding clothes
See also:
Gabardine