This hat is easy, fun and makes a nice, warm winter slouchy hat. I have wrote The Blaine Slouchy Hat in simple crochet terms in English. You will need 3 hook sizes for this pattern…. 5.0mm, 5.5mm and 6.0mm. I used a regular 4 ply worsted acrylic yarn about 5 oz. The pattern is written to fit average women with head circumference 21-23 inches.