Why we like it: Crafted from 100 percent lambswool, the Fjällräven Byron Hat Thin is a luxe option for cold-weather comfort.

Behind this evolution lies precise thermal engineering. A proper winter beanie hat must balance heat retention without moisture build-up; structure without stiffness. Modern construction considers ...

Another pro? It can be worn as a beanie or cuffed to fit ... As WH editors, we're big winter sports girlies. And when we need a sweat-wicking hat that seamlessly goes under ski helmets ...