Klein 60181 Cooling Helmet Liner, Medium/Large

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

Mesh fabric at crown expands airflow for maximum breathability

Front fabric is 92% Polyester, 8% Spandex

Back fabric is 100% Polyester

Machine washable and reusable