The Buff Western States Ecostretch Reversible Beanie is a double layer microfiber hat made to protect your head from the cold. Ideal for professionals who practice outdoor jobs. Suitable to be used under a helmet. Details: One product, two different styles. Enjoy more and combine it better thanks to its two different patterns. UltraStretch technology: highly stretchable product designed for top comfort and performance. Designed in one piece and without any seams to obtain maximum comfort preventing skin irritation. Made using recycled materials.