The most versatile midlayer in Patagonia's Regulator line, the Women's R1 Full Zip Fleece Jacket offers stretchy, durable, and breathable comfort. Take it on cool weather hikes, layer it under a shell while skiing, or rock it solo when you're running errands on a chilly day this adaptable jacket keeps you comfy no matter where you take it. Patagonia updated it this year with a Polartec Power Grid fabric, which features a raised grid pattern that traps heat. This allows it to be lighter and more breathable than before, while ensuring it keeps you just as warm and still offers the same outstanding stretch and durability. The slim fit keeps it close to your body for maximum insulating efficiency, not to mention it lends it a stylish feminine silhouette. Zippered hand pockets give you a place to warm your fingers, and the Polygiene treatment prevents the growth of odor causing microbes so you're not doing laundry constantly.