Cotton Blend FIRE RESISTANT Made with modacrylic cotton blend fabric that meets ASTM F1506 performance requirements (ATPV rating of 7.1 cal/cm2); classified HRC1 per NFPA 70E. Meets ASTM F2302 for flame resistance LONG LASTING INSTANT COOLING RELIEF Can last for up to 4 hours on a single soak. Simply re-wet to increase cooling duration EASY TO USE AND ACTIVATE Soak in ice water 2-5 minutes or until plump , ring out excess water, and it's cool! Avoid oversoaking or oversaturation. Secure around head for cooling relief as temperatures rise. DURABLE AND REUSABLE Product can be re-used over and over again. Just re-soak to activate HAND WASH Use mild detergent, rinse and blot dry