This is a lovely slouchy hat crocheted from the bottom up with a nice ribbed cuff. Sizes range from 0-3 months to Adult large. While this hat is designed to be slouchy, you can roll the cuff up to make it more fitted - making it versatile as you can change how you wear it!
The ribbing uses a 4mm hook while the main body of the hat is crocheted with a 5mm. The smallest size will use roughly 60m/70y of yarn and your largest size around 200m/220y. This is approximate and can vary based on the specific yarn you used. Any worsted weight (4) yarn is suitable for this pattern.

I am always available to answer any questions you may have.

Happy crocheting!