The ScentBlocker Arctic Weight Long Sleeve Shirt Black XL base layer retains all the heat without turning you into a sweat-soaked mess. Tat is because they are not only warm but breathable, moisture-wicking, and quick-drying in extreme cold. The ScentBlocker S3 antimicrobial technology assists in controlling odors, makes a great base layer for hunting in frigid weather. This shirt is a pull-over style wit 1/4-zip front and a 2.5" color to keep the elements out. Flat seams for comfort and mobility and has a zipper pocket on the left sleeve.