Now I'm using the Zentek coat on my dog, Teddy, after a bath. Yesterday was 77F , today, 45 F - 60 F, and windy. I am watching the flea situation more closely, so will bathe her more often to see if I can catch them .I've noticed fleas being more prevalent in the Northwest, with milder winters and generally warmer days earlier in the year. I put her Zentek coat on her, and she dries in under an hour. It was the agility people that discovered this. They run their courses in all weather..all the dogs got soaking wet. The ones in the Zentek coat dried quickly with their coats on. All the others stayed wet. I really didn't have an answer. But then someone, smarter than me, suggested, that because the lining absorbs excess heat (over 83F) it had set up an air convection.Pulling the heat from the body, and releasing it through the fabric. Makes sense.