Leisure Arts Urban Hats Made With The Knook Knit eBook- With the Knook, you can now knit with a crochet hook. The Knook is a specialized crochet hook that creates true knitted fabric, while the attached cord completely prevents dropped stitches. Create 7 modern hat designs with a variety of Knooked knit stitches. Designs include: 2-stitch cable. 4-stitch cable, chevron lace, circles, easy lace, sideways garter and tassel hat. Projects call for size 4 worsted weight yarn and Knooks in US crochet hook sizes G-6, H-8 and I-9. Includes step-by-step instructions and multiple sizing options for each design. Finished hat sizing options measures between approximately 19" and 21" in circumference. Intermediate skill level.