The zig-zag pattern adds a great textural touch. The design is knitted using 100% cotton worsted weight yarn and sizes 4 (3.50 mm) and 7 (4.50 mm) straight knitting needles and a 24” size 4 (3.50 mm) circular knitting needle. A size E (3.50 mm) crochet hook is also used to create an armhole edging of single crochets and reverse single crochets.