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When the pace kicks up a notch, the women's REI Winterflyte jacket offers great breathability and excellent range of motion. Double-weave knit polyester/spandex fabric repels wind, resists water, breathes well and provides the comfort of 4-way stretch; blocks wind up to 25 mph. Durable Water Repellent finish causes water to bead up and roll off, fending off light rain showers and snow. This jacket dries in under 4 hrs. Stretchy underarm panels enhance mobility and breathability. Zippered handwarmer pockets and 2 internal drop-in pockets securely store necessities; headphone port facilitates easy use of tunes. Back zippered pocket is perfect for stowing bulky essentials such as gloves or a hat. Internal cuff gussets help maintain warmth inside, and thumbholes keep the sleeves in place during aerobic activities. Active fit offers a contoured cut with strategically placed seams so that the top moves with the body for a full range of motion. Our REI Winterflyte women's jacket also features reflective detailing to increase your visibility in low light.