No hate from me, mate, but I would point out that no Buffalo product is waterproof according to their faq's. Personally, I don't find them to be remotely waterproof, and I do sweat inside my special 6, regardless of how many vents/flaps/zips I have open. I think it is a technical garment that provides a good solution in particular circumstances, nothing more. I do love my Buffalo lightweight mountain shirt - I'd recommend trying one out if you haven't already