The Hard Hat Liner can be worn beneath a helmet, ball cap, or straw hat. It features a "reverse bill" that rests on the neck for extra cooling effect.How it works: CoolMedics® products are made from apatented three-layer fabric that by combining hydrophilic fibers into a fibrous batting core and a thermally conductive membrane lining, will provide cooling after soaking the product in water for two to three minutes. The water activates the cooling process by charging the fibers with moisture and creating an environment for evaporation. When moisture in the batting evaporates, heat is removed and cools the surrounding area, transferring the cooling effect to the wearer.  Depending upon the environment, this cooling could last up to eight hours, and can be recharged by simply immersing the product in water to restart the cooling process.This product has been laboratory tested in a heat chamber, bringing the inside temperature to 114 º and placing the dampened cloth in the heated chamber. In every test, the fabric, with a separate temperature sensor, has maintained a temperature that is lower by 20 to 25º for a period of 4½ hours.Testimonials:

"I wore yourCoolMedics vest, cooling scarf and helmet cooler to my first place finish atTevis.  Quite literally, I am not sure I could have stayed in the saddlethat long, hot day without your products.  They're fantastic!  Ithank you, and my first place mare, SMR Fifi d'Orr, thanks you."

Cathy Rohm-Richardson

"My husband was waiting to show his mule in a halter class at Bishop, CAthis May.  The temperature was well in to the 90s and wearing a felt cowboyhat was murder!  I rescued him by purchasing a cool cap to wear under hishat ... he was set for another four hours.  I'll bet  the judgewished for a cool cap, too!" 

Margot Humphreys, San Diego , CA