When soaked in water, the polymer crystals expand and turn into a crystalline gel. The fabric absorbs water from the polymer, allowing the water to slowly evaporate for a cooling effect. The fabric stays cool and moist for hours due to the polymer’s water-retaining properties and the slow evaporation rate.
Polymer crystals only in the hard hat liner
• 1K-3K Microns water-absorbing, non-toxic polymer crystals • Quick activation process. Soak in cold water for 2-5 minutes • Provides cooling relief from heat stress for up to 4 hours • Velcro closure • Reusable. Hand wash only and hang to dry • Made with Westex® fabrics • Meets requirements of: NFPA 70E, ASTM F1506
