When the temperature dips and the gym just doesn't cut it, throw on the Niner Performance Beanie and get out there. Perfect for active adventures outside as well as some time by the fire.Features:- Low profile makes it perfect by itself or under a hood? And if you're wondering about under a helmet, well, that's going to depend on your helmet and its adjustability. An in-house test made it a Yes for some and a Probably not for others. No matter what, it's a fantastic beanie.- A microfleece headband lining offers extra warmth and comfort.Specifications:- Material: 100% acrylic