3M 7502 Half Facepiece Reusable Respirator adjustable features are designed to help reduce pressure and tension points on the wearer’s face, while the adjustable head cradle provides a secure, personalized fit. 3M 7500 Series reusable respirators are made from an advanced silicone material to help give your crew comfort throughout their shifts. Use with 3M Particle Filters 2000, 2200, 7000, or 5000 Series to filter certain particulates.