With single-layer coverage at the crown and double-layer coverage at the ears, these snug-fit skull caps are moisture-wicking, breathable, and quick-drying, making this hat a great option for all of life's adventures, big or small. A great option for adventure enthusiasts, athletes, or weekend warriors, the snug-fitting Brain Shroud (TM) skull cap is made of our proprietary Comfort Shell (TM) Stria fabric. This sweat-wicking hat offers 4-way stretch and remains both breathable and quick-drying, regardless of the weather, or your activity level. It's perfect as a helmet liner, scrub cap or a stand-alone beanie. Turtle Fur Brain Shroud Comfort Shell Stria Beanie Liner | Charcoal | Christy Sports