★ exhaust gas, dust filter series a broad range of media up to ★ "Sport", from the series "and the" DACC filters with double wall construction. ★ Wide range of effective protection your pollen from the gaseous pollutants. ■ Material: Activated carbon fiber filter and anti-static fiber filter for double walled ■ Size: Medium. Large. XL ◎, featuring 3 different replacement filters available. ◎ 1 each per pack approx 69 hours of use and recommend you replace in the United States. - Can be used on all masks are common. * Color of the product may look different depending on the type of computer monitors, and display. Color or customer returns, exchanges are not allowed. In addition, the product details, logo, etc to the improved design is different, please understanding. May be altered to