3M FFP2 Respirator Valved Fold-flat Cool Flow Reinforced-material Ref 9322A [ Pack 10].- Packed 10.- enhanced comfort.- Headband material keeps a near constant tension, reducing strap pressure & ensuring secure fit.- The advanced three panel design of the 9300 series means they are easier to breathe through & not prone to collapse.- 3M Cool Flow exhalation valve minimises heat built up.- Foldable design offers more convenience than traditional cup shaped respirator.