Smartwool Active T-Shirt - Men's Black Extra Large. Crafted with the odor resistance moisture management and temperature regulation properties of Merino with the durability of recycled polyester. The relaxed fit means there's no additional bulk with offset shoulder and side seams designed to help increase comfort and minimize chafing no matter how you move. This short sleeve is complete with reflective elements. Specifications for Smartwool Active T-Shirt - Men's: Manufacturer: Smartwool Age Group: Adults Apparel Fit: Athletic Gender: Male Application: Outdoor Fabric/Material: 56percent Merino Wool 44percent Recycled Polyester Features of Smartwool Active T-Shirt - Men's Fabric blends the moisture management temperature regulation and odor resistance of Merino with recycled polyester Package Contents: Smartwool Active T-Shirt - Men's Smartwool SW00274800110XL000: Active T-Shirt - Men's Black Extra Large