Cool Coats use the latest in fabric cooling technology to offer the best cooling garments available for pets today. 3 Layer construction combines an inner and outer cotton/polyester fabric with cooling polymers which is lightweight, antibacterial and stretchable. The middle polyvinyl layer’s high water absorbtion capacity releases cooling by evaporation for hours of cool comfort for pets. The unique surface layer with micro-perforations provides breathability allowing body heat to escape. To activate the cool coat simply submerge in cold water for about a minute, wring out excessive water and it is ready to wear. Each soaking will provide 2-6 hours of cooling, simply repeat as necessary.