Icebreaker Beanies - Icebreaker Adult Pocket Hat - Black/Gritstone Heather :: Men > Beanies. Anti-bacterial construction keeps the hat odour-free for longer Men's Icebreaker beanie Fit: Tight fitting Merino wool construction regulates your body temperature keeping you warm in the cold and cool in the heat Material: 100% Merino Wool Reversible design Woven Icebreaker label to hem Protection from harmful UV rays Fits under your helmet The merino wool fabric pulls moisture away from the skin toward the outer layer of the material. allowing it to evaporate easily