Larisa Face Cover surgical masks consist of 3 layers of protection ( "3ply" ), with an epithelial plate in the nose area and a fixing rubber for their best application. They are suitable for healthcare staff and citizens as they ensure significant impermeability to bacteria along with excellent breathability and hypoallergenicity. Properties: Surgical face masks. Hypoallergenic, from 100% "non-woven" polypropylene. With three layers of protection ( "3ply" ) for greater security. With mounting rubber and belt plate. With a bacterial filtration efficiency of over 98% ( BFE ≥ 98% ) against suspended particles and droplets. Ergonomic: They fit perfectly into the shape of the face. Standards EN 149: 2001 + A1: 2009 Annex B, EN ISO 13485: 2016, EN ISO 9001: 2015 and with CE certification. Packing with 10 bags of 5 pieces. Dimensions ( adults ): 17.3cm x 9.4cm. Color: Light blue. One use. Use: Apply the mask by holding it by the laces ( remove it from the laces and discard after use ).