A self-packing jacket? Yes, the Women’s Nano Puff Jacket by Patagonia compacts down to practically nothing and then can be stuffed into its own internal zipper pocket… and with the carabiner, you can then clip your “jacket pouch” and head out on the trail. But don’t be fooled by that amazing feature. This is still a serious layer or piece of outerwear. It’s windproof and weather-resistant enough and warm enough to wear as an insulated shell or jacket for cool weather. It also has two zipper hand warmer pockets to keep you warm and is super lightweight at just 10.5 oz. Comes in 7 colors.