The Rapha Brevet Insulated Gilet pairs Polartec Alpha insulation with a water-resistant, DWR-treated nylon shell, warm enough for a cold start and packable enough to roll away once the ride heats up. A two-way full-length zipper with a zip garage lets a rider adjust airflow without the zipper pull rubbing at the chin, and soft side panels keep the fit close without restricting movement. Zippered back pockets hold energy bars or an extra layer within easy reach. What Our Gearhead(R) Experts Are Saying:"I crack the zipper open from the bottom on a climb without ever touching the collar, so I'm managing heat without breaking stride. Once the sun's out I roll the whole thing up, loop it at the neck, and stuff it in a jersey pocket without a second thought."