Proviz commuter jacket massive reduction

Jem PT wrote:

The problem with these is the lack of breathability. Fine for short or electrically assisted rides, but I found it uncomfortable for my flat 6.5 mile commute on my (analogue) Brompton. 

It was indeed originally sold as an ebike jacket on the basis that the rider would be making less effort. The manfacturer claims some breathability of 10,000+gm/24hr but I've no idea what that means! The side pockets are designed with mesh lining with the idea of leaving them open for extra ventilation as desired and the double zip at the front allows for adjustment to let more air in at the neck or the waist as desired. I have trouble keeping warm when temperatures drop anyway so I'm happy to be a bit "boil in the bag"! I wouldn't use it in summer for sure but I did a thirty mile (non-electric) ride in it the other day with the temperature around 8-10 degrees and found it very usable.

bikes wrote:

Pit zips seem like a good solution to me for the problem of overheating. I've never owned a cycle jacket that has them though. Does anyone have experience of one that does?

Yes, my Proviz Reflect 360 has zips that open from halfway up the bicep round to about the bottom of the rib cage and they work an absolute treat, zipped up with a suitable base layer or two it's warm enough for all but the very coldest winter day, unzipped it's fine as a rain jacket on a 28° summer day.