Insanely jealous and can hardly wait until next spring when Columbia Sportswear's Omni-freeze apparel will be released. Fast Co's Mark Wilson recently had a chance to test out a shirt that is made out of a fabric that stays cool in warm humid weather and therefore also keeps the wearer comfortable.
On the fabric, there are blue rings of hydrophilic (greek: water loving) molecules that absorbs moisture. The molecules get excited and will try to separate. It uses thermal energy from the user's body to do so and thus creating "a prolonged and enduring cooling sensation that lasts as long as the fabric stays wet."