Reusable mask featuring 98% bacterial filtration efficency. Filters meet surgical mask standards. Filters included! Each mask comes with five replacement filters. Enjoy comfort in style. Burj Multi - Filter Mask BUFF®: Worldwide, face masks have become an essential accessory for daily activities like grocery shopping, using public transport or going for a run. The BUFF® Filter Mask features a 3-layer, replaceable filter system in a washable mask design made from Cool Net UV+® fabric. Reliable and comfortable, featuring 98% bacterial filtration efficency. Filters meet surgical mask standards. Powered by Hei Q V-Block- The fabric technology Hei Q V-Block protects the inside pocket fabric of the BUFF® Filter Mask from microbes and germs. It contains a biocide based on recycled silver salt. Active ingredient: Reaction mass of titanium dioxide and silver chloride. Antimicrobial properties built in to protect the inside pocket fabric of the Mask. The Mask does not protect users or others aga