The Generator Alpine offers reliable warmth, durability & amazing water resistance in a lightweight & compressible package. This is the perfect jacket for use as a lightweight technical belay jacket or as a practical outer layer for backpacking, climbing & mountaineering. Combining the warmth from the Primaloft insulation & the amazing weather resistance makes the Generator Alpine the perfect insulated jacket for our typical wet & cold winter weather. Warmth is provided by 100g/m² Primaloft One in the body & 60g/m² in the sleeves & hood. The performance of Primaloft, unlike Down, is virtually unaffected by water; you can literally soak this jacket, wring it out & it will still keep you warm making it the perfect piece for our wet climate. Rab have used the superb Pertex Endurance for the face fabric which has an ultra-thin membrane which allows it to breathe & maintain high water resistance. Rab have added heavier, higher denier (70D) panels on the shoulders to add protection from rucksack straps. Whilst not guaranteed so, the combination of Primaloft One & Pertex Endurance make this jacket practically waterproof. To keep the weight down & to improve the Generator Alpines packability Rab have used superfine Pertex Quantum fabric for the lining; this ultra-lightweight fabric absorbs little moisture, wicks moisture & dries quickly. The main zip is a YKK Aqua Guard VISLON zip that is highly water resistant & runs smoothly even in freezing condition & is backed up by an insulated baffle to prevent cold spots. The other external pockets all feature YKK Aqua Guard zips but they are not completely waterproof, so if you have items that must be kept dry (mobile phone or GPS) protect them with a waterproof case or bag. Rab have used their superb hood design for the fully helmet compatible fixed hood. The hood may be able to accommodate a mountaineering helmet but it adjusts to fit your head comfortably & features a wired peak to stop it flapping around your face. I really like the Rab hood design, it works with all headgear without being too big & baggy. If you want one winter jacket to do just about everything from mountaineering to dog walking, then this is the one. Primaloft ONE insulation (100g/m² in body, 60g/m² in hood & sleeves) Helmet-compatible hood with wired peak & roll-down Velcro tab & drawcord adjustment 2-way YKK Aqua Guard VISLON front zip with internal insulated zip baffle Reinforced shoulder patches 1 x YKK Aqua Guard zipped chest pocket, doubles as integrated stuff sack 2 x YKK Aqua Guard zipped A-line chest pockets 1 x YKK zipped internal security pocket 1 x internal open mesh pocket Velcro cuffs Hem drawcord Tricot lined collar Reflective trims Regular fit