3ply surgical face masks Specifications as below: Width across face : 175 mm + / - 2 mm Depth pleated : 95 mm + / - 2 mm Depth in full : 175 mm + / - 2 mm Nose strip : 95 mm + / - 2 mm Loop size : 155 mm + / - 5 mm Components 1st layer : Polypropylene Spunbond nonwoven. 2nd layer : Meltblown Nonwoven. 3rd layer : Polypropylene Spunbond nonwoven. Nose strip : PE wire (Metal Free) Ear-Loop : Flat elastic or round elastic (latex free) Benefits & standards: BFE (Bacterial Filtration Efficiency) 99% (tested by Nelson lab) Comply with EN 14683, ISO 9001 and 14001