Thin is in baby, and the Chockstone women's jacket from Sierra Designs wants to be your new best friend. It's slim, lightweight, waterproof, breathable and packable. As Bogey said, this could be the beginning of a beautiful friendship.
The Chockstone is the kind of versatile piece that's essential for any outdoor enthusiast. The synthetic Primaloft One insulation will keep insulating when wet, although getting wet in the first place is highly unlikely since the shell is waterproof/breathable DriZone. The light to middle weight insulation will layer up or down, depending on how hot or cool your motor runs, and for those occasions where only a hood will do just adjust and drive on.
The pocket scheme is fully dialed in: hand pockets are zippered, as is an external chest pocket, and there are two internal mesh pockets, one open and one zippered. Bonus: you can stuff the jacket into the zippered pocket. The Lycra bound cuffs with thumbholes make sure your sleeves stay where they're supposed to. This is really useful, whether you're putting your hand into a glove, reaching up high for that big tool swing or just looking for a little extra heat on your hands.
The slick exterior sheds snow and rain effortlessly, and the look is fitted enough to go seamlessly from slopes to sidewalks. There's even an English-Metric conversion chart printed on the inside, so feel free to get all international. From the cool Fall through the wet Spring the Chockstone begs to be the jacket you live with day in and day out. Try that with some of your other so-called friends.