TOTOBOBO Large Anti Pollution Mask/Washable and Reusable Respirator/Air Pollution/Allergies / Viruses/Bacteria / Dust/Cycling / Motorcycle/Running / Travel New Anti Pollution Mask from Totobobo - Large Earloop Size Suitable for most adult male Totobobo mask is designed to provide maximum protection, comfort and ease of use to everyone. Unique features includes: (1) Patented "Water-mark seal check" is easy and reliable. (2) World's first customizable mask. You can shape it and trim it. DIY to the unique face of each of your family members. (3) Very flexible and comfortable to the skin, superior fit due to the SoftTech material. (4) By far the lightest reusable respirator. Weight only 20 grams. (5) Super elastic strap, most comfortable and durable. (6) Reproduction of bacteria or virus is prohibited on the surface of the mask,thanks to the anti-virus additive