Radians Arctic Radwear® Hard Hat Cooling Sweatbands are made with advanced ARCTIC® Technology that accelerates the evaporative cooling process. Just soak the sweatband in water for 2-3 minutes and experience cooling relief. The Arctic Radwear® Hard Hat Cooling Sweatband is designed to keep you cool during hot outdoor activities, such as construction work.Easy InstallationSoak in water for 2-3 MinutesWave in the air for 10 to 15 seconds activating ADVANCED ARCTIC® materialSecurely snap sweatband over existing hard hat suspension headbandReactivate your SWEATBAND in extreme heat or humid conditions by soaking again in water and twirling/waving in the air for 10 to 15 secondsHand wash only, using mild detergent, Do NOT bleachSafe and reusable, job-site provenAnti-microbial treated to help prevent mold build-up and unwanted smellsHeat stress safety management - cools body temperatureLasts up to 5 hours, depending on humidity levelsHard hat and suspension sold separately