Coldpruf Platinum II Crew Long Sleeve Shirt Black Medium. Made with 70 percent polyester and 30 percent Merino wool to wick moisture and aid in evaporation. ColdPruf technical fiber with Silvadur Intelligent Freshness helps to reduce odors. Crew features comfort cuffs and flat seams. Specifications for Coldpruf Platinum II Crew Long Sleeve Shirt: Manufacturer: Coldpruf Sleeve Length: Long Sleeve Age Group: Adults Apparel Fit: Athletic Gender: Male Color: Black Package Contents: Coldpruf Platinum II Crew Long Sleeve Shirt Designed with two-layer engineering for added warmth. Made with 70 percent polyester and 30 percent Merino wool to wick moisture and aid in evaporation. ColdPruf technical fiber with Silvadur Intelligent Freshness helps to reduce odors. Crew features comfort cuffs and flat seams.