This is a comprehensive glossary of common knitting abbreviations that you are likely to find in a pattern. Wherever it's relevant, I've included links to videos which cover the technique. inch(es)
Ribby Warmth: Sometimes it can be difficult to get a guy to wear a knit hat, but there's just something about ribbing that makes it a little more palatable.
This pattern for helmet liners, also known as "wool pulleys" for soldiers was provided by Linda Swinford of Auburn, Illinois. The original pattern is by Bonnie Long and appears here along with modifications made at the request of soldiers who have received the liners.