The 3M™ 7500 series reusable half masks have set a new standard in comfort. The patented exhalation valve provides increased durability and is easy to keep clean. Available in three sizes, all masks have the 3M™ Bayonet Attachment System offering a broad range of twin lightweight filters to protect against gases, vapours and particulates depending on your individual needs and can also be used with 3M™ Supplied-Air Systems. Size - L