Run Tek 3 Ply Earloop Face Masks provides disposable protection against inhaled particles and bacteria. Both inner and outer layer of the masks are made with non-woven fabric. Between these, there is a layer of high efficiency filter which can effectively filter bacteria and particles. Material 3 ply (100% new material) 1st ply: PP25g/m2 spun-bond PP 2nd ply: PP25g/m2 melt-blown PP (filter) 3rd ply: PP25g/m2 spun-bond PP Features Bacteria Filtration Effect >99% High spec filter, Adjustable nose-bridge, Soft elastic cord. Ideal for medical surgical and daily use Certificate CE, ISO13485 (Medical device-Quality management system-requirements for regulatory) Effective Size 17.5*9.5cm Available in Blue only. 50 Pack