This professional-grade fire fighting wet towel is made of 100% pure cotton, pre-moistened and sealed in aluminum foil packaging, with smoke filtration efficiency over 99%. Research shows that over 80% of fire deaths are caused by suffocation, not burns. Available in three specifications: Premium 150g/4-year shelf life, Standard 110g/2-year shelf life, and Basic 70g/2-year shelf life, suitable for homes, schools, office buildings, hotels and other venues for emergency fire escape. Tested and certified by fire departments, it can be deployed in seconds, effectively buying precious evacuation time.