This is a knitting pattern for a tam, knit in the round, with a rolled edge, corrugated ribbing, and a small amount of stranded colourwork (charted). The floats are rather long in places, so you may have to catch the non-working yarn on the wrong side of the work, or use another method to deal with long floats. Watch your tension in the stranded section; go up a needle size if necessary.

FINISHED MEASUREMENTS
Circumference: 50 (54) cm (19 ½ (21 ¼) inches)
Depth: 9.5 (10) cm (3 ¾ (4) inches)
Diameter: 26 (27.5) cm (10 ¼ (10 7/8) inches)

Size (L) is worked at a different gauge: 26 st/35 rounds in stocking stitch in the round, using the larger needle.