One ball of Heritage Wave from Cascade Yarns will get you any of the hats in the pattern, and I highly recommend it as the compacted gradient makes for a beautiful ombre; however, any fingering-weight gradient or variegated yarn will work.

This hat has four different version to choose from, depending on your desired outcome and your needles on hand. Each version is made with fingering-weight yarn held triple using the Navajo Plying method. It can be made with either size US 8 or US 10 needles, and made either slouchy or as a closer-fitting beanie. The hats made with size 8 needles tend to be smaller and denser, and the hats made with size 10 needles tend to be looser and slouchier, but each hat is designed with a relaxed fit in mind. Each comes with a different type of decrease to suit the different fabrics, but you can mix and match decreases as you see fit.

PLEASE NOTE: the beanie made with US 10 needles has not been test knit. If someone tries it, let me know how it goes!