The Buff Micro Polar Hat boasts the wherewithal to tackle active, cold weather sports, with a quickto dry, moisture managing outer layer featuring Polygiene odor control. The Micro Polar Hat is engineered to be protective, comfortable and perfectly fit, no matter the temperature. A fleece inner lining provides extra warmth. 100% microfiber polyester outer layer. Fleece lined interior. Polygiene odor control fabric. Cool weather thermal protection : 32f 68f. Moisture wicking, dries quickly. One size fits most adults.