In a crowded field, this is a no-compromise coat that stands out for a few good reasons. First, it is really well constructed, with two layers, waterproof seams, and a lightweight overall build that you won't mind packing along. There are no pockets or headphone channels, but those are a terrible idea on a raincoat. There are no vents, which would be a problem if you like to ride in the rain in Alabama in July, but at the top of mountain passes it would be a nice way to get a little warmth, especially on descents.
Second, it has long sleeves with an elastic band that extends past the wrist over the hand. (See photo.) Note that I'm 6'5" with a 37" sleeve and that's a "large." Don't be intimidated, though, you want the sleeves to run long, and way too many manufacturers get that horribly wrong. You can easily get your gloves over that elastic and seal those sleeves up nice and tight. It's tight fit, however; you're not going to take this off while you're moving. The sleeve design alone puts this coat well beyond high-end competitors I have seen from Rapha and Aether.
Third, they managed to put together a serious 2-ply coat and yet it's still thin and light. I got mine down to the size of a Coke can, easily tolerable in the jersey pocket for what it does. Determined squishing would almost certainly fit it in a Ziploc sandwich baggie.