Smartwool Classic All-Season Merino Base Layer Bottom - Men's Black Extra Large. With an updated fit to improve functionality while enhancing aesthetics these bottoms stay durable while 100percent Merino next to skin keeps you comfy and ready for more action. This gear is built for four seasons of adventure. Specifications for Smartwool Classic All-Season Merino Base Layer Bottom - Men's: Manufacturer: Smartwool Inseam Size: 31 in Gender: Male Age Group: Adults Application: Casual Color: Black Fabric/Material: 88percent Merino Wool/12percent Nylon Features of Smartwool Classic All-Season Merino Base Layer Bottom - Men's Our slim fit is intended to follow the contours of the body Our lightweight Merino jersey fabric uses a recycled nylon core to increase durability while still keeping 100percent Merino wool next to skin Flatlock seam construction designed to minimize chafing Fully functional fly Merino-lined elastic waistband designed for maximum comfort Package Contents: Smartwool Classic All-Season Merino Base Layer Bottom - Men's Smartwool SW01695800110XL000: Classic All-Season Merino Base Layer Bottom - Men's Black Extra Large