Does anyone own/wear a cooling vest for sports, exercising, medical conditions, working in the heat, etc? At times I really get overheated while exercising and my trainer is looking to get a few for the club, but I think I may want to get my own that will fit me and possibly one for DH when he works outside.

There is no a whole lot of info out there, but from what I gather it seems that the gel ones are the best and that they should be snug and worn over clothing. Thanks in advance.