https://www.mountainwarehouse.com/p/053276/mw/adrenaline-mens-iso-viz-waterproof-jacket/yellow/Have you actually used it as suspect I it will be like wearing a plastic bag. It one of these shops that always having a sell I bet most of the stuff has only been full price for long enough to make the legal requirements. It’s cheap for a reason.
Worn a good few times now, only for commute though. I've tried on enough expensive plastic bags, masquerading as waterproof cycling jackets, so I know what you mean. This jacket isn't one of them. It has underarm zipped vents but as weather is cool at present, they've stayed closed. Guess I'll find out how breathable it is when I put in the effort on wet summer days. It's at least showerproof but I've yet to be caught in a real downpour. I still consider it excellent value as a commuter cycling jacket at around £35.