This hat was designed to work up with only one skein of Furls Whims Merino Worsted Weight Yarn.The pattern is easily adjustable and can be made larger but you will need more yarn if you upsize.This pattern was based on the Invisible Woman Hat.I hope you enjoy making them both!Join my in my Facebook community if you have questions and would like to show off your completed hats. 1: https://www.bettymcknit.com/invisiblewoman 2: https://www.facebook.com/groups/bettysbesties