Olivia Knit Headband Pattern PDF We used medium weight yarn and 4.5mm set of knitting needles. Use 12" round needles to make this super cute headband! I am so happy with how this one turned out. Sizes: This headband is VERY stretchy, so it is very versatile. I made a https://www.etsy.com/listing/1178412279/knitting-pattern-easy-knit-headband