I've had many Rain Jackets that I've tried out when Hunting/Farming and Stoney Creek Stow It Jacket is one of the best Lightweight Jackets there is I'd say. I had to wait a few days for it to arrive from New Zealand to North Wales but it was worth it.

Mint lightweight waterproof jacket that fold up and fits inside itself and takes up hardly any room. It has belt loops so can be carried without a pack. Great bit of kit.

Love this light weight rainwear, so compactable and easy to throw over the top of work clothes.

I've been looking for a package jacket that was a) actually water proof and b) light enough to wear during various activities and this works amazingly well. A++