Cycling jackets are a big investment, both in terms of economics and preference. If you've a fall weight jacket that fits you perfectly, then it's a minor tragedy when you have to switch to your winter weight jacket that hangs loosely or simply doesn't fit well. After all, in cold weather riding, comfort is already at a premium, so it's a shame to sacrifice fit for function. The Gore Bike Wear Phantom 2. 0 SO Jacket's removable sleeves address both of these concerns, alternating between a short sleeve Windstopper top for fall and spring conditions and a long sleeve jacket when winter rolls in essentially giving you two jackets that fit the same way for the price of one. The Phantom 2. 0 features Gore's venerable Windstopper Soft Shell fabric. The Soft Shell construction is a touch heavier than Gore's similar Active Shell fabric, owing to a difference in lining. Active Shell uses a thin, mesh like scrim for wind protection without adding undue warmth and weight while the Soft Shell incorporates a plush, soft lining that's thicker for insulation in cold weather while still providing the wind resistance for which Windstopper is named. Wind resistance is expressed in terms of CFM, which determines permeability by measuring the volume of air that can pass through a given material in one minute. Since all fabrics branded with the Windstopper stop sign logo either meet or exceed the windproof rating of 1. 0 CFM, they are all literally windproof. Windstopper Soft Shell is also water resistant and wicks moisture away from your skin, so you're protected from moisture both inside and out. Though Windstopper is stretchy, it does sacrifice some give in pursuit of elemental protection, so Gore incorporates stretch panels in the Phantom 2. 0. This permits a full range of movement, whether you're stretched over the hoods or reaching down into the drops. We love Windstopper fabric, but it's hardly a rarity in cycling clothing these days. What really sets the Phantom 2. 0 apa...