Bertie Crochet Leg Warmer with Knooking Method (Video Tutorial) Posted by Bertie, on May 06,2019 3138 × If you can't save with Pinterest Save Button, you can use button below Click For Crochet Abbreviations List Doing a pair of leg warmers...This is called knooking In this method you used a crochet hook to do the knitting stitches. .