The Mountain Hardwear Butterlicious Long Sleeve Crew is a versatile crewneck made from their super-soft Butter Lite Jersey fabric.Its blended fabric is made from 85% polyester, to keep moisture at bay, and 15% elastane, for stretch and mobility. The Butter Crew is as comfortable and easygoing as it is easy to care for, with a solid-and-stripe pattern that makes it a stylish addition to your closet. A new classic.