Fair Isle Crochet Projects Book- 8 Traditional Projects using the Fair Isle Technique. If you're feeling crafty, colorful, and perhaps a bit cold, then look no further. This technique is used to create patterns with two colors per row, and the unused color is worked over, weaving it into the fabric. All designs are easy plus. Projects include hats, scarf, cowl, afghan, and pillow. Uses worsted weight yarn and US sizes G, H, and I hooks. 48 pages in a soft cover.