Rapha, nice but a bit pricey?

Although I have a Montane rain jacket that packs down to the size of a plum, and is mad waterproof. Sorry its not wapha.

How is it for breathability?

Boast post. But my arms are nearly as thick as my legs. Pretty sure my current ones are Endura in a large, and I cant bend my arms in them.

Better cut up some 3/4 bib tights and use them as arm warmers....