Disposable dust mask Uvex silv-air classic 2310, cup-shaped, FFP3 NR D, with valve that reduces respiratory resistance and moisture in the mask. Protection against particles and aerosols. Soft face sealing. Ergonomically designed, even for small faces. Adjustable nose clip, molded nose area. 4 point adjustable headband. Compatible with Uvex glasses. Weight 29 gr.