The 3M 8512 disposable N95 particulate welding respirator helps provide respiratory protection. Sometimes referred to as disposable masks N95 Masks are typically designed to work for one shift while an employee is using this respiratory protection and then to be discard at the end of the shift hence the term, "disposable Mask" or "dust Mask". The 3M 8512 N95 respirator Cool Flow™ Valve and fully adjustable straps provide added comfort as it allows for easier breathing in warm climates and the straps adjust to make breathing easy while performing jobs that require N95 breathing protection.