Coldpruf Classic Men's Crew Long Sleeve Base Layer Merino Wool Commando XL. Single Layer Jersey Knit. Natural Stretch with snug comfortable fit. Modified Raglan Yoke Shoulder. Self Fabric Cuffs. Drop Tail. Silk Weight 5 oz. - 170 gsm. 17.5 Micron. Specifications for Coldpruf Classic Men's Crew Long Sleeve Base Layer Merino Wool: Manufacturer: Coldpruf Sleeve Length: Long Sleeve Age Group: Adults Apparel Fit: Athletic Gender: Male Color: Commando Fabric/Material: Merino Wool Sleeve Type: Long Package Contents: Coldpruf Classic Men's Crew Long Sleeve Base Layer Merino Wool 100 percent Merino wool with single layer jersey knit design. Crew features an athletic fit with natural stretch and modified raglan yoke.