I'm the madmonkeyknitter from www.madmonkeyknits.com. This is my Garter Stitch Trapper hat knitting pattern.It can be knitted in any dk yarn and similar gauge eyelash yarn on 4 mm needles. The knitting pattern provides full instructions for 4 sizes XS (baby), S (child), M (woman) and L (man) with many step by step photos to help you along the way. This hat is actually fully reversible should you wish to wear it furry side out. As its double thickness it is also incredibly warm to wear.