This looks like a great idea... but I would want to try one out before dishing out $160 for something I don't really know works. The concept seems sound if it really stays at 65 degrees for 2 hours.

Why didn't you like them when you used them at work JH26? Just too bulky? Did it not really keep you cool? Did it wear off too fast?

The weight thing seems to be a non issue in my mind, hell I bet my jacket, boots, etc. are just as heavy as this thing. I book marked the website. Good find! I have been looking for a better way to gear up and stay cool ever since I started riding. This may be the best suggestion I have come across so far as it is not gearing down, but providing "air conditioning" under the gear.