Weighing 189 grams this PHD is another amazingly light insulated jacket. Filled with 1000 fill power down it’s warmer than a heavyweight fleece yet weighs less than a lightweight one and packs down into a tiny ball. A simple zipped design with handwarmer pockets and a snug collar it’s very comfortable to wear. The shell fabric is very thin and not recommended for outerwear with a pack. I’ve found it fine under a jacket. I took the Wafer on the Scottish Watershed and loved it on chilly nights. And if 189 grams is too heavy there’s the WaferLite Down Shirt at 140 grams and the Wafer Down Vest at 130 grams.