On Sale. Free Shipping. Smartwool Men's NTS Midweight Zip T Shirt DECENT FEATURES of the Smartwool Men's NTS Midweight Zip T Shirt Form Fit Interlock knit UPF 50 Zip T with set-in long sleeves has 10in. / 25 cm #3 coil zipper with chin guard Shoulder panels eliminate top shoulder seams Flatlock seam construction eliminates chafing Heat transfer logo at left sleeve cuff The SPECS Garment Weight: 9.52 oz / 270 g Fabric Weight: 7.4 oz/yd2 / 250 gm/m2 Fabric: 100% Merino Wool