What Our Gearhead(R) Experts Are Saying:"The R1(R) Thermal Jacket is my go-to for cold alpine days. It's lightweight yet provides incredible insulation and wind resistance. The slim fit layers perfectly under a shell, and the zippered pockets keep essentials secure. A reliable choice for anyone tackling technical terrain in frigid conditions."When temperatures drop and the mountain calls, the Patagonia Women's R1(R) Thermal Jacket answers with unparalleled warmth and protection. Designed for alpine objectives, this technical fleece pairs a soft, breathable microgrid interior with a durable outer layer that resists wind and light snow. Zippered hand and chest pockets keep small essentials secure while maintaining a low profile under a harness or pack. Thumbholes ensure your hands stay warm and your sleeves stay in place, no matter how you move. Sustainably crafted in a Fair Trade Certified(TM) factory, this jacket performs as good as it feels-on the mountain and for the planet.