Stay protected and show off your love of running (and Fleet Feet) with the BOCO Fleet Feet Performance X Face Mask. This updated and lighter version of the original BOCO Face Mask is made with two layers of polyester knit that wicks away sweat. Plus, the internal layer features a slit that can hold a filter for additional protection. The mask will fit securely while you workout thanks to the soft elastic sewn to both the top and bottom and over the ears. The mask covers the nose and mouth comfortably with slightly less structure than the original BOCO Face Mask. So whether you are running errands or lifting weights at the gym, the BOCO Fleet Feet Performance X Face Mask is a high-performance, comfortable face mask. Please note that this is a non-medical grade mask and does not meet OSHA standards for PPE (Personal Protective equipment).