For rough weather conditions, the hard shell jacket sounds like the right tool for the job, at least on paper. You'll find quickly, however, that your hard shell is hot and clammy. That's because it just isn't breathable enough for the kind of work you're doing on a bicycle. All that vapor (and you're making a lot of vapor) is trapped inside the jacket and suddenly you're wearing a steam room. The hard shell fabric also flaps around like crazy on any downhill and it just doesn't feel very soft and comfortable. This is where a softshell jacket like the Gore Bike Wear ALP-X 2.0 SO Zip-Off Jacket really shines. Softshell fabric is ultra-breathable and allows your body to regulate its temperature naturally without trapping heat and moisture against your skin. Gore's soft shell fabric is also stretchy so it's able to give the Alp-X a more athletic cut that not only makes layering easier, but doesn't flap around every time you bury the needle.The ALP-X 2.0 SO Zip-Off Jacket is constructed of WindStopper Soft Shell fabric. WindStopper Soft Shell is soft, stretchy, breathable, and body-contouring. It fits and breathes like a comfortable mid-layer, yet it offers a level of water and wind resistance that approaches the protection afforded by a hard-shell jacket. Gore Bike Wear gave the ALP-X its Slim Fit, which means that it contours the body closely to ensure aerodynamics and proper moisture management. Strategically placed stretch panels eliminate binding and add durability. Additionally, the elbows are pre-shaped so that there's no restrictive tugging when you reach for the handlebars. The jacket has a subtle drop tail for full coverage and to protect the seat of your pants from wheel spray. It also has a shaped collar to ensure neck comfort. The zipper is supplied with an underflap and garage to keep it tucked away nicely when the jacket is fully zipped. If you find yourself overheating during hard efforts, you can ventilate through two side zips.The Alp-X Jacket has removable sleeves so you can quickly turn it into a vest on warmer days or for layering purposes. There are two zip pockets on the back for security and one mesh pocket for your water or a snack. the single chest pocket holds your music, keys, or whatever you'd like to keep close at hand. A partially elastic gripper at the waist keeps the jacket from riding up. Fall rides often happen under low-light conditions, so Gore Bike Wear put a reflective logo on the front and back of the jacket, along with added reflective print on the sleeves and back. The Gore Bike Wear ALP-X 2.0 SO Zip-Off Jacket comes in sizes Small through XX-Large and in five color schemes: Black, Castle Grey/black, Navy Blue/black, White/black, and Red/black.