Rapha, nice but a bit pricey?

And walking around a warm house isn't exactly the best test of a piece of cycling clothing?

So you're saying I should test it by riding it and then invalidating my opportunity to return?

I guess that's why someone with a modicum of intelligence would be able to replicate the right conditions for them personally based on the amount of time spent on the bike and knowing other situations that they think would be comparable.

I'm honestly not joking when I say a bin bag would serve the exact same purpose. Considering it's the same price or more expensive than a jersey, I'd rather buy another jersey, or a gilet, and just keep a kitchen bin sized bin bag in my pocket at all times, much more cost effective. If I'm just going to whip it on as a layer when I'm stopped, it doesn't need to be technical beyond being packable.