I typically get mine lined. I'd rather have it hang well and not get stuck on my shirt. There's also the issue of having your shirt (or boxers) shine though the jacket.I have no controlled testing to prove it, but the kind of construction you get (shoulder pads, etc.) may make more of a difference than the lining. When you're using 9/10oz, it isn't normally that great for very hot weather anyway.
3/8/16 at 1:53pm