Features:Designed with a non-woven cloth filter to screen out air pollutant like dusts and vehicle fumes.Replaceable and washable filter, and is designed to be effective for at least 3 months in normal daily use.Designed with two one-way valves to allow easier exhalation of heat, water vapour and

Features:Designed with a non-woven cloth filter to screen out air pollutant like dusts and vehicle fumes.Replaceable and washable filter, and is designed to be effective for at least 3 months in normal daily use.Designed with two one-way valves to allow easier exhalation of heat, water vapour and Carbon Dioxide,suitable for glass wearers.Aluminum lock, help to fit the mask onto nose stably.Made of SBR to give a comfortable and secure fit.Specification:Color: BlackMaterial: Non-woven cloth &SBRProduct size: Approx.51 * 14.5cm / 20.1 * 5.7in (L * W) ?folding size?Product weight:  41g / 1.5ozPackage size: 23.5 * 16 * 3.5cm / 9.3 * 6.3 * 1.4in Package weight: 41g / 1.5ozPackage List: 1 * Mask