DSkool - The world leading manufacturer of various Personal Cooling System! Working in hot climates, particularly for long periods, is physically stressful and can compromise a person's safety, focus and efficiency. DSkool products have been approved by US Military to be highly effective at maintaining the user's body temperature at safe levels and for longer periods than any other self-contained cooling system available. DSkool products minimizes the effects of environmental extremes and related heat stress by cooling the body temprature of the user. Consisting of a garment connected to cooling pack, DS Kool is easy to set up and comfortable to wear. Product lines: Water cooling series Compressor cooling series Warming series