Cool on Track - Cooling Dog CoatCool your dog quickly with Cool on Track, a high tech material by Back on Track. The Back on Track Cooling Jacket works by storing water and using it to exchange your dogs heat as it evaporates. As the water turns from liquid to vapour your dogs temperature drops. Simply add water to the rug to keep the cooling effect. No chemicals or access to your freezer is necessary. The Cool on Track Dog Coat effectively changes the surface temperature by 6+