The Men's Mountain Hardwear Butterman Crew is the perfect solo workout shirt, or use as the perfect baselayer for high endurance adventures. Made from mostly polyester with a chunk of elastane the Butterman crew is lightweight, quick to dry, and feels great on bare skin without any restriction in stretch. Wick.Q technology quickly pulls excess moisture of your skin, disperses it quickly, and allows for efficient evaporation so you'll feel so much drier in less time when cooling down on your adventures. Layering this Butterman crew under your warmer layers is always a great idea since it will keep any built up sweat from soaking into your thermal layers and making you feel damp and cold. You'll want to make sure the Men's Mountain Hardwear Butterman Crew is either on your person or packed in with your gear if you're heading outside during cool months to go explore!