Call it what you will - a cold weather knit hat, a ski cap, a stocking cap, a skull cap, a beanie or a toboggan. Any way you look at it it's 100% acrylic and it'll keep your head warm. This one is red with a 3-D Maryland "M" logo on the front and Terrapin embroidered on the back. (Or vice versa, depending on how you choose to wear it.)