My offspring bought me the Helite Turtle 2 airbag vest for my 80th birthday. We bought it from Cycle Gear online. Cycle Gear shipped it to my door. I've had it six days now and have worn it twice. I wear it over my Tourmaster mesh jacket. I haven't been on the open road with it yet. We have been under heat advisories every day for over a week.
It is not much warmer than the mesh jacket in urban/suburban riding. I have worn it with a temp of 88 F and the heat index at 103 F. I rode for about 35 minutes. I also wore it when the temp.was 91 F and the heat index was 105 F. I rode about 25 minutes. I believe on the open road, I could ride about an hour in these temps before taking a break.
Pros:
1. It is very well made, heavy duty and should be durable, even in a sliding get off.
2. It appears to offer good protection and really good support of the neck.
3. I like the high viz.
Cons:
1. It is a little bit warmer in the heat of the day, but not nearly as bad as I envisioned. Definitely tolerable.
2. It is heavy and a bit bulky; but I'm sure I'll adapt to that.
3. It takes a bit of time to unfasten the tether to dismount and unbuckle the vest to take off. But with practice that will become second nature.
4. It is one more item to carry and secure when you are off the bike at a destination.
All in all, I believe it to be a wise investment and after a few months it will be as natural as wearing a helmet.
In the photos below, I'm wearing the vest over my Tourmaster riding jacket.