This is a unique hat which uses the technique of double-knitting to create two separate faces with two distinct patterns. To add to the complexity, there are three colors in each round. In order to accomplish this, you must forget some of the rules you’ve learned about double-knitting.
On one side, there is a classic tumbling-blocks pattern; on the other, an Armenian cable motif chart. Both patterns are all-over designs.
This hat has a long pattern repeat -- a multiple of 20 pairs -- and it can’t be fudged, so it is necessary to swatch before jumping in to make sure it will fit.