Cooling Vests will keep you cool, but different vests are suitable for different situations.
1. Evaporative Cooling Vests are best suited for use outdoors, and on days when humidity is not too high. These vests work on accelerating your body's natural evaporative cooling. The vests are soaked in water. As the water evaporates your body temperature is reduced.
These vests are relatively effective. They are cheaper than other vests. Prices start at about $30.
On the downside, they are not suited to be worn underneath other clothing. This will slow down the evaporative effects. Your clothes will be wet after wearing these vests. Evaporative vests available at http://www.silvereagleoutfitters.com
2. Phase change vests these vests use packs that you freeze. The pack is filled with a gel made of Hexadecane. The pack melts at 18 degrees. The high melting point is very effective at keeping your body temperature at a natural level. These vests are very effective indoors and outdoors. They do not really on evaporation to keep you cool so are fine to wear under clothes. You will stay dry.
The only problems with these vests are that they are expensive $180 plus. In addition to this, you will need two or three sets of packs to get you through the day costing around $100 plus per set. Phase change vests available at http://www.coolsport.net
3. Personal Ice Cooling System (PICS) are the most effective by far. They are also the most expensive about $1800. They work by pumping iced water around a vest using a small pump. The pump is powered by rechargeable batteries. The water is cooled by ice packs. One of the advantages is that it uses regular ice in packs and as long as you can find a freezer or ice your in business.
These vests will keep you cool in any conditions. They are even used by the military. They are suited mainly for working environments in the heat. They require a type of back pack of tobe worn. This system weighs of approx 8lb. They are very effective though at keeping you cool in the heat. (PICS) available at http://www.technicalproductsinc.us/cool_system.html
4. Cooling bandanas and neck ties use highly absorptive polymers that are sewn inside neckties and bandanas. When soaked in water they absorb water and swell up. They are then worn and help a little to keep you cool. They use evaporative cooling. They can also be placed in the refrigerator before use for added cooling. These products available at http://www.imcoolnow.com
5. Lastly guys as simple as it may seem to try to have plenty of cold water handy. If you drink water before you start to become dehydrated you feel much better.
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