Coldpruf Basic Crew Black X-Large. Made from 60 percent cotton/40 percent polyester blend. Crew features rib cuffs for added protection from cold and a full cut true fit. Specifications for Coldpruf Basic Crew: Manufacturer: Coldpruf Age Group: Adults Apparel Fit: Athletic Gender: Male Color: Black Package Contents: Coldpruf Basic Crew Designed with two-layer engineering to trap warm air. Made from 60 percent cotton/40 percent polyester blend. Crew features rib cuffs for added protection from cold and a full cut true fit.