Check the listing for details. NEW KIDS CAMBRIDGE MASK CO BASIC NAVY BLUE SMALL FACE MASK FILTER REUSABLE CHILD. Condition: New. Listed at 20.00 USD. FOR SALE IS: A KIDS FACE MASK BRAND: CAMBRIDGE MASK CO KIDS SIZE: SMALL MODEL: BASIC COLOR: NAVY BLUE CONDITION: NEW IN PACKAGE. (SEE PICTURES.) The Cambridge BASIC Navy has been designed for high intensity activity such as cycling and running, especially for inner city living where air pollution levels are high. Lasting for up to 90 hours of active use, the BASIC is reusable and washable.New Lab tested filtration technology filters over 95% of pollution, gases, and bacteria and viruses up to 90 hours of use.Trusted by people at risk of respiratory diseases, living in or travelling to areas with high air pollution levelsProtection against odours, all PM; PM2.5, PM0.3, pollen, smoke, and pathogens such as viruses and bacteria.The world's most trusted anti-pollution mask ideal for cyclists and high intensity activities within inner citiesLightweight, Breathable materialReusable for up to 90 hours of active usePresented in a frustration free ziplock bag for reuseINDEPENDENTLY TESTED FILTERCertified as child safe under 14 U.S.C 1278a and CFR Parts 1370 1501 1500.53 and 1500.44 (Certified by Bay Area Testing Labs)EN149 standards for CE in the European Union99.6% viral filtration efficiency and 99.7% bacterial filtration efficiency (tested by Nelson Labs USA)Particle Filtration Efficiency >98%