Not so impartial ---but the ones Steve has on the Parker can and are worn for 10 hours solid and are super comfy and hold up very well considering what they are exposed to - and while well looked after do seem to be holding up well .
I would echo what Pete has said. They are remarkable jackets and will replace with the same when the time comes.
I sometimes forget that i have it on, but then I'm starting to forget a lot of things ....
