The Patagonia Lightweight Down Sweater Pullover is the layer that disappears into a daily routine, light enough to forget it's there and warm enough to carry a cool morning or an air-conditioned afternoon. The shell and lining are both cut from NetPlus 20-denier ripstop woven from postconsumer recycled fishing nets, a material choice that keeps the weight down while giving the down a tightly woven barrier to hold loft. What Our Gearhead(R) Experts Are Saying:"The 800-fill down packs a surprising amount of warmth into a shell that weighs just over 12 ounces, so it earns a spot in a bag or locker without taking up real estate. The half-snap placket lets me dial the collar open or closed without committing to a full zip."