Prana Sherpa Crew Mens - The Mens Sherpa Crew is a pullover and a shirt. Made with a cotton/ acrylic/ polyester blend, the Sherpa Crew is soft and warm with a brushed interior for extra comfort. This Prana classic pullover crew features twisted marled yarns for a rugged exterior. A comfortable regular fit allows freedom of movement for outdoor climbs and hiking around town. The Mens Sherpa Crew looks casual but performs technically.