The Mens Marmot Doyle Hat is a classic and stylish beanie that delivers a ton of warmth and comfort for your head! The Doyle M Hat is made with a combination of durable and quick-drying acrylic and warm micro fleece. The Men’s Marmot Doyle Hat is inspired by classic headgear from the frozen north, this hat features an eye-catching and classic woven design and (of course) tassels.