Smartwool Intraknit Thermal Merino Base Layer Crew - Men's K18 Winter Moss Extra Large. Our Men's Intraknit Thermal Merino Base Layer Crew is a lightweight super-moveable top made for all of your most extreme cold-weather activities. With Merino wool yarns and gender-specific ventilation perfectly placed to maximize thermoregulation and breathability during high-intensity activities it helps amplify moisture management movement and comfort. When you're in our best base layers you're ready for anything. Specifications for Smartwool Intraknit Thermal Merino Base Layer Crew - Men's: Manufacturer: Smartwool Sleeve Length: Long Sleeve Age Group: Adults Apparel Fit: Slim Gender: Male Application: Baselayer Top Fabric/Material: 53percent Merino Wool 45percent Polyester 2percent Elastane Weight: 7.34 oz Fire Resistant: No Features of Smartwool Intraknit Thermal Merino Base Layer Crew - Men's 3D mapping results in near custom fit and freedom of movement while ribbed elbows provide added durability Mesh ventilation seamlessly knit in gender-specific zones designed to keep the body dry and comfortable Engineered construction uses knit structures to enhance performance with lighter weights and cleaner finish Package Contents: Smartwool Intraknit Thermal Merino Base Layer Crew - Men's Smartwool SW019286K18XL: Intraknit Thermal Merino Base Layer Crew - Men's K18 Winter Moss Extra Large