The New Manta X ® 20 is made of Carbon X ® material and Kevlar ® elastic with Nomex thread. The Manta X 20 is easy to use just like a Bandana. The Manta X is made of stretchable material which makes it easy to pull down and up when needed. (The Manta X 30 is a slightly larger version of the Manta X 20). Used with an Xcaper Filter (which filters hazardous gases and vapors and 100% of particulate matter) you have the perfect combination of protection for 4 to 6 hours. The filter simply Velcro’s to the inside of the bandana. Each mask comes with one Xcaper professional filter.