The 3M Half Face Reusable Respirator 7500 Series has a soft, silicone face seal for greater comfort and durability. The 3M Cool Flow Valve helps make breathing easier and can reduce heat and moisture build-up for cool, dry comfort. Combine with a broad range of twin, lightweight 3M filters or cartridges to provide respiratory protection against particulates and a variety of gases and vapours. Soft, silicone facepeice for comfort and durability Drop down feature for added convenience during breaks Thin nose bridge area for reduced pressure and improved comfort 3M Cool Flow Exhalation valve offers reduce breathing resistance Respirator design helps reduce fogging when wearing eye protection For a reusable respirator that's comfortable to wear, use 3M Reusable Half Face Mask 7503. The facepiece has a soft sealing surface that's been specially designed with the end user in mind. Our large size half face mask features the 3M Cool Flow Valve to reduce heat build up by allowing warm, exhaled air to escape. And with low breathing resistance, it's comfortable to wear and work in for many hours at a time. The unique head harness fits well with our hardhats and hearing protection, and the optional drop down strap design provides stability and ease of use. A twin filter design means the weight is evenly distributed with minimal obstruction to your field of vision. It protects against gases, vapours and particulates, and the bayonet style connection fits to a broad range of twin lightweight filters which can be equipped to your individual needs. It can be used with 3M Supplied Air Systems for your increased convenience and flexibility, and connects with all 3M 2000, 5000 and 6000 Series filters (except 3M 6098 or 6099). The 7500 Series has a specially designed range of spares and accessories to help you maintain the right level of comfort and protection when parts become worn or damaged.