... ,Breathable2.No stimulus to human skin3.Filter pollen,dust and bacteria4.Used for clinical,housework,gardening,maintenance of the ... powder is over99%3.Repel continually contamination of dangerous blood and saliva continually.Inner cover is well sweat-absorbed,while outer ... is water resistant.4.Polypropylene cloth,low breathing resistance and high filtration effciency.5.Latex free,lint free,fiberglass ...