How can you stay warm yet move freely on hiking trails, bike paths, golf courses, wherever you want to be outdoors on chilly days? Start with Climaloft™ fiber technology. The fill is as thin and warm as natural down, but without the allergens, radiating continual warmth, even in wet conditions, trapping your body heat (warmth as low as 23°F/-5°C). Add strategically-placed stretch fabric that lets you move every which way. Quilted thermal front and back panels; stretch sleeves, sides, bottom and hood!