Run through shoulder season with whisper-light core warmth that's just right for the temps—the men's REI Co-op Swiftland trail run vest sheds drizzle and blocks wind without weighing you down. Lightweight recycled nylon fabric on the front, shoulders and lower back resists wind to 30 mph and is treated with a durable water repellent (DWR) to shed light rain Stretchy upper back panel is 73% nylon/27% spandex for breathable, sweat-wicking comfort Zippered chest pocket holds your keys and card, and it doubles as a stuff sack for the vest Cut for easy movement, with a hem drawcord to minimize drag and bounce as you run Reflective trim helps you stay seen in low-light situations REI is Climate Neutral Certified; as we work to actively reduce our footprint, we measure annual carbon emissions and purchase an equivalent amount of verified carbon credits Contains materials that meet the bluesign® criteria Made in a Fair Trade Certified™ factor New with tags