Comfort: Cup shape. Exhalation valve for lighter breathing resistance. Adjustable nose clip for optimized fit. Whole around “O” ring face joint for maximal comfort. Wide adjustable elastic bands.Features CE certified Retail box which aids presentation for retail sales Dolomite optional clogging test (D) to provide more comfortable breathing and longer lasting filtration performance Ideal for all day use Adjustable strap fastening for flexible sizing Adjustable nose bar for improved fit and reduced fogging of glasses Ultrasonic welded head straps High performance exhalation valve to reduce heat and provide comfort when used in hot and humid conditions Internal foam gasket ensures a tight face seal Certifications EN 149 FFP3 NR D Material Composition Materials: PVC,Canvas,Cotton,Elastic We deliver Portwest P303 FFP3 Valved Dolomite Respirator worldwide.We specialise in shipping almost anywhere in the world securely at competitive prices - across UK, US, Canada, Ireland, New Zealand, Europe - securely and fast at competitive prices