These Cooling garments harness the COOLING ENERGY that is produced when water naturally changes from liquid to gas (evaporation) Polymer Embedded Fabric is sewn into each garment lining and functions as a powerful liquid management system. OSi Cool'R Apparel is activated by simply submerging it in water. Once activated, the garments will provide hours of cooling relief and are an effective way to combat heat stress.

Hows these work:

Simple submerge them in your ice water cooler that you keep your drinks in at the track for 3 mins. Then ring out the excess water and simple put the vest on or crown cap under your helmet and enjoy the coolness. No reason to not ride on a hot track day now! We use these and they work great!