2505 For protection against fine toxic dusts, mists and fumes, based on water and oil. The Duramesh structure makes the mask strong and durable, reducing consumption and maintaining shape. The ActivForm seal automatically adjusts to different face shapes and movements and the Ventex valve reduces moisture and heat. The strap and clip allows you to hang the mask comfortably around the neck whilst not in use. Standard: EN149:2001 + A1:2009 FFP3 NR D. Supplied in packs of 10.