The Gamma Jacket is a full cut, full-length model (35 ﾼﾔ center back length measured from the neckline to the bottom of the back hem, size Large), with 2-way zipper front and provision for zip-in liner (in combination with the Propper Echo F5474 Softshell Jacket). The jacketﾒs Nylon shell fabric has a waterproof/breathable barrier throughout the body, sleeves, and collar, and is fully factory seam-sealed. The jacket is completely lined for a clean finish.