The Moldex 3255 Air Mesh Valved Disposable Small Respirator FFP3 NR D offers significantly lower breathing resistance. They offer superb protection from harmful and toxic fumes, dusts and mists 20 x WEL. Pleated filter technology offers 260% more filter surface area - almost 3 times larger than a standard filter product allowing you to breathe more easily. The ActivForm provides a good seal around the face while the Ventex-valve reduce heat and moisture in warm conditions. Duramesh® strong and durable structure keeps the mask in shape. High filter capacity - longer usage time. Loop strap with clip for quick, simple and safe on and off. Pack of 10. Tested and certified to EN 149:2001+A1:2009