Alphacool7V Rechargeable Circulatory Cooling Vest 3L Bladder Mini Pump Summer

Let me start by saying I'm a firm believer in happy wife, happy life, and my wife can't take the heat but we live in AZ. There are a few things that can't be helped, like the ice not lasting, but if you freeze the bag with 3 liters in it, it will last quite some time, however, I also know that takes a day or more for a freezer to do. The 2nd thing, is wear something over top of the vest so hot air is not warming all the water out of the bag. My wife wore it for 8 hours, and changed in the middle of the summer here in 117°F heat and it was cold the whole time. She even had to turn it off a few times as she was getting too cold. So awesome!

JUNK! I live in Western Kentucky. It's Spring 80° with a humidity of 40%. I tried this that day. It last cold about 3 hrs. The pump is slow and the materials are not venting so you sweat from no air flow. They have a long ways to go before this even works correctly. So glad I didn't not wear to work as a welder and get it dirty and not be able to return. At best I say if you do not move at all and it not about 70°.

The battery easily lasts several days of use, 2-3 hours a day, however the ice reservoir does not. In warmer weather or high activity, the ice melts in under an hour, and is warm to the touch within 2 hours.