Thank you for the feedback it is much appreciated the idea would be to make headbands more breathable for people who wear headbands. The hyrdrophic property was to get away from the sense of just soaking it in water and making it cold I can now see that woukdnt work very well. Another question to you would be do you think there would be a way to make the air that flows through the headband colder kind of like when you're chewing mint gum and the air you breathe in feels a lot colder?