The Rab Men's Neutrino Pro Jacket is built to provide maximum warmth and protection for expeditions, in alpine conditions, or simply against extreme cold. Its weather-protective outer shell and premium water-resistant down insulation equip it for whatever Mother Nature throws at it. The exterior of the jacket is constructed of lightweight Pertex Quantum Pro ripstop nylon fabric. Though not completely waterproof the jacket does provide excellent weather-resistance for snow and spindrift and ensures windproof/breathable protection. Warmth is provided by ample amounts of lofty, lightweight, and compressible 800-fill ethically-sourced, RDS-certified goose down. Unlike traditional down the jacket's insulation has received a Nikwax treatment that helps it stay dry longer dry faster if it should become wet and most importantly continue to insulate even if it does become damp. An insulated and adjustable helmet-compatible hood extends protective coverage and bolsters warmth. The hood has a built-in brim that has a bit of structure to ensure that you maintain a clean line of sight while still fending off glare and precipitation. Other features include a full-length, two-way front zipper with an insulated storm baffle, adjustable cuffs, a zippered internal chest pocket, and insulated handwarmer pockets. A stuff sack is also included so you can safely stow the jacket in your pack when not in use. Available in your choice of size and color options, the Rab Men's Neutrino Pro Jacket is designed to leave plenty of room to comfortably layer beneath it.