Included are 4 Masks and 4 Premium 40mm Filters. BE PREPARED FOR ANY EMERGENCY: Get peace of mind knowing that you are safe and protected from potential airborne threats. The mask features an innovative built-in speech diaphragm to make communication easier and more efficient. The Mask and Filter can be used in a variety of ways. From home projects in adding a layer of protection to your face or for your favorite HALLOWEEN Mask, the mask and filter will serve its purpose. So have fun using the mask for your next paint ball game, for preparedness, or any other use you may find. 40 mm FILTER-Charcoal is carbon & Activated charcoal is charcoal that has been treated with oxygen to open up millions of tiny pores between the carbon atoms. The use of special manufacturing techniques results in highly porous charcoals that have surface areas of 300-2,000 square meters per gram. Charcoals are widely used to adsorb odorous or colored substances from gases or liquids. QUALITY: Trusted by professionals around the globe. We provide cutting-edge equipment and self-defense gear that meets the demands of top-tier military operators-with key engineering enhancements to make them more practical and effective on the homefront, including solutions for children and the elderly. Dedicated to delivering superior products and unrivaled satisfaction! Made with High Quality professional grade material. Plastic lens made from premium plastic. MANUFACTURED: Made in 2023 and good through at least 2033 Sealed INCLUDES: 4 Face Masks (ONE SIZE FITS ALL), 4 Charcoal Filters w/ 40mm threads. 10+ year shelf life. Is trusted by professionals around the globe. We provide cutting-edge equipment and self-defense gear that meets the demands of top-tier operators-with key engineering enhancements to make them more practical and effective on the homefront, including solutions for children and the elderly. LONGEVITY: 10+ year shelf life. Compact size and aasy to stockpile, suitable for long-term storage, the masks are safe to use for many years. They can seamlessly fit into any emergency preparedness or survival kit and feature durable, rugged construction for reliable operation and protection when you or your family need it the most. ECONOMICAL: Superior protection you can afford. Cost-effective and built to last, the Mask is an entry-level mask that offers the safety and broad range protection you expect from a premium mask with a price point that’s tough to beat. Plastic lens made from 2.5 clear plexiglass. The filter is made from Aluminum (shell) with activated Charcoal (contents). SIZING: This premium mask is One size fits all. From kids to adults, the durable adjustable straps allow you to make a great fit. The included 40mm Filter is best with the mask but can also fit any mask that has a 40mm thread.