I will primarily be hunting waterfowl in open water in a blind or out of a boat.

I guess my question is more.......Do they keep the dog warmer or not? Are are they more touble than they are worth? I have a golden that will retrieve in icy water without any complaints but I would like to make him as comfortable as I possibly can. Last season was his first season and it was a mild one. If it gets colder this season I am not sure if it will affect him. I have heard that they can not withstand temperatures as low as a lab.

Thanks[&:]