The Megawatt is a lovely piece of kit made from ultralight Pertex Microlight fabric with a clever combination of 800 fill goose down through hood and torso and 100g Polartec Alpha breathable insulation throughout entire jacket. This, along with an Ultralight DriClime lining means your body can easily adjust to differing conditions to keep you dry and warm.
It comes with an adjustable hood, two zipped hand pockets and two mesh inner pockets, draw cord hem and elastic bound cuffs with an interior Lycra cuff, so it's fairly minimalist in design, but this simple approach just adds to the appeal of the Megawatt in my opinion.
It's similar in lots of ways to the Rab and Norrona jackets, although I'd be more inclined to use the Megawatt as an outer shell than a layering piece unless conditions are exceptionally cold.