I've worn this in winter (with my own layers underneath) and in the British summer (without the layers). It's been windproof, completely waterproof and extemely comfortable. One of the best coats I've ever owned.
I've been looking for a full length Gore-Tex raincoat for years because I was tired of getting soaked or having to pull on extra waterproof pants. There are a few police versions but they are very expensive. This coat fills that niche nicely. Now if I can talk them into overcoat length!
This garmet is warm, light, contains plenty of storage space, and keeps this inhabitant content. The zipper is awkward, some strengthening needed there, is hard to align but... standing school bus guard duty in blustery wintry wet days this thing is perfect.
Give this raincoat a heavy-duty zipper like you'd find on ski jackets or on militray gear and you'd have a perfect 10 of raincoat. The zipper it comes with is virtually impossilbe to start/use when you are wearing the coat. A raincoat you can't zip is waste of money. I bought this to wear for a rainy winter trip to Germany and gave up trying to use it.