ColdPruf Classic Merino Crew Baselayer Black Large 100 percent merino wool construction;Single-layer jersey knit;Fabric weight: 5 oz.;17.5-micron fiber;Natural stretch;Snug, comfortable fit;Modified raglan yoke shoulder;Self-fabric cuffs;Drop-tail hem;Available in sizes medium, large, X-large, 2X-largetable.productattributes, Item Category Code: 5500 Product Group Code: 5500B Product Sub Group 1: 5500B1 Product Sub Group 2: 5500B1D Inactive: No