This is a ribbed watch cap available in sizes Small, and Medium/Large. The 2/2 ribbing guarantees a stretchy hat. Knit on size 4 mm needles, worsted yarn should yield a gauge of 16 stitches for 2 inches in unstretched rib. The samples were knit in Briggs and Little yarns, Regal and Heritage and used about 200 meters of either.