58 degree Phase Change cooling vest or collar for hot heads or MS patients

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I just discovered these products about a month ago. A little too late for the mostly cool summer we had, but I look forward to using the cooling collar for under my very hot Santa suit and for next summer. I don't have Multiple Sclerosis, thank the Lord, but reviews from those poor heat intolerant people prove these things work. They are already in use by military, MS patients, sports enthusiasts, and yours truly.

So what is it? Unlike water evaporative cooling products which don't work in high humidity, or get moldy and smelly, Phase Change cooling products work in ANY kind of heat or humidity without wetting. "Must be ice cold and uncomfortable, right?" Wrong! Unlike ice or those frozen gels, Phase Change liquid is relatively safe clear liquid in pouches, which harden into a white waxey substance. They cool at a constant 58 degrees Fahrenheit (14.44 C) for up to 2 hours.

How long to freeze them? 30 minutes in ice water, 90 minutes in a freezer, or a couple of hours in the fridge. A small ice chest with spare cool packs could keep you cool and comfy all day along at the beach, picnic, BBQ, or sporting event.

Here are some links.

My Amazon review is the long one. You will see I suffered (a little) in testing the collar. Please vote on my review!
http://www.amazon.com/Deluxe-Phase-C...0&sr=8-2-spell

Best designed cooling collars I have found. Excellent price for 2 cool packs.
http://www.aqualitywater.com/head_and_neck_wear.htm

More color choices from this site. It is where I bought my neck cooler in white.
http://heatreliefdepot.com/catalog/a...2df1bec6212c3c

Nice back wrap I bought from here. Smaller than a vest and keeps core body temperature down. http://www.northamericanpride.com/in...dex&cPath=5_14