Well at least if you don't like it you can return it in a month. Im tempted by it too, if it enabled me to do a few more jobs each summer it would pay for itself. Cool vest and cool water in the summer sun......
These are a brilliant idea! I've never heard of anything like it before, probably because I live in England.
However, when it gets to 30 degrees it's a huge shock to the system and we really struggle.
I'd be interested to know if there is one on the market that is effective for around 3 hours.