Polaris Granite jacket. The Polaris XO-Storm fabric is designed to be highly waterproof yet breathable, offering the perfect combination of performance & durability. This makes it a great choice if you want a jacket that works brilliantly in all weathers & disciplines. The sleeves taper allowing it to fit neatly into gloves & keeping you looking smart on your bike, & have a transparent patch to check your watch or GPS without rolling them up. Bike Radar verdict: A reliable & highly useful addition to any cycling wardrobe & gave it a 4/5 star rating.