Smartwool Active Short Sleeve - Men's Clothing : Nightfall Blue : The primary materials that compose this product contain a minimum of 20 percent recycled content. ; ; Our regular fit Smartwool Active Short Sleeve is intended to help give you room to move without additional bulk. The fabric helps combine Merino's moisture management, temperature regulation, and odor resistance with recycled polyester. Offset shoulder and side seams are designed to help increase comfort and minimize chafing. It has a crew neckline, short sleeves, and a straight hem. ; Pull-on style. ; Reflective elements. ; Brand logo on the left sleeve. ; 56% Merino wool, 44% recycled polyester. ; Machine washable. ; Imported. | Smartwool Active Short Sleeve Men's Clothing Nightfall Blue : MD, Polyester/Wool