MONTANE Reactor Quantum GL Jacket PERTEX Quantum GL Outer - An ultra-lightweight, windproof and breathable fabric that is rustle-free for ultimate comfort. DRYACTIV Mesh Brushed Liner - Wicks moisture to the outside and is comfortable against the skin. Articulated Arms - Provides ease of movement, and tailored specifically to reduce hem lift. Soft Fleece Beardguard - Around the neck for extra comfort. Chest Pocket - Provides safe and secure storage for handy essentials in the mountains.