The All Occasions Checkered Flat Cap pattern comes in three sizes for a comfortable fit: Small (18” – 20”), Medium (20” – 22”), Large (22” – 24”). The hat is made smaller by reducing stitches in the headband and Side Panel that wraps around the sides and front of the hat. If you find you need a snugger fit, it is easy to do by simply reducing these stitches. The pattern includes a key and chart for the ribs and cables.