I use my cooling vest all of the time during hot weather, including the deserts of AZ, NV and UT. I found mine on line and it works well under the mesh jacket as long as the vents are open, also under a vest only. When used properly it will drop your core temperature significantly.

​​​​​​http://www.mycoolingstore.com/techni...ling-vest.html

 

According to several threads on this very subject lately, the answer is...yes. They do work.

 

They work and they work well. I'm not so sure I would wear one under a leather jacket, though--vented or not.

 

 

Yes they work.

I keep a dry bag with water in it in my saddlebag. When the vest dries out and stops cooling, I stop (usually at a fuel stop), put the vest inside it, squeeze and shake it around a little and it goes back on.

 

 

they work better in dry areas, as opposed to high humidity, but even in the high humidity of la, you still get some benefit.

 

 

I bought HD brand after looking on line. Main advantage was being able to try one on in the local shop. The HD brand seems to run a little on the small side.