Zentek Clothing designs and manufactures quality thermo-regulating (phase change) clothing. All our products feature Comfortemp fabric -- breathable, water-resistant and temperature-controlling fabric that is lightweight and soft to the touch. Our product provides comfort ... hence the name Zen, for comfort or bliss ... and tek, for technical fabrics. We need smart fabrics and clothes in our changing climates. These are lightweight garments, as it didn’t make sense to put extra weight on an already-overheated victim. They are designed to absorb then release excess heat. NASA developed the technology so astronauts could survive outer space. Now, that technology has been improved and woven into lightweight, washable garments for dogs and their companions. No other coat does it all.