Details
Evaporative Cooling Hard Hat Liner: Attaches to standard hard hat headband. Attaches to standard hard hat headband. Lightweight, cooling acrylic polymers. Hook & loop closures. Conveniently attaches to hard hat suspension system. Soak in water 2-5 minutes to activate. Remains hydrated for up to 4 hours. Reactivate by re-soaking. Solid blue.