Klein Tools Cooling Helmet Liners

Klein Tools cooling helmet liners will cool up to 2 hours when wet. Once activated, they cool up to 30 degrees below body temperature. Mesh fabric at the crown expands airflow for maximum breathability.

Additional details:

* Cools instantly when activated, up to 30 degrees below body temperature
* Wicks away sweat from the head for up to 2 hours when wet
* Activate / Reactivate: soak with water, wring out excess water, snap 3-5 times to activate
* Front fabric is 92 percent polyester, 8 percent Spandex
* Back fabric is 100 percent polyester
* Machine washable and reusable
* One size fits most