The Leiden Beanie was designed to accompany the Leiden Cowl. It is the 10th pattern in my Dutch Cities Collection. It is written for 5 yarn weights and uses circular knitting needles:

DK (3): US 5/3.75mm and US 6/4mm
Worsted (4): US 7/4.5mm and US 8/5mm
Light Bulky (5): US 9/5.5mm and US 10.5/6.5mm
Bulky (5): US 10/6mm and US 11/8mm
Super Bulky (6): US 13/9mm and US 15/10mm

Skill Level: Advanced Beginner/Intermediate