3M香港華能亞洲有限公司-上海代表處-3M防毒面具及 3M™ Head Cover S-533 The 3M™ Head Cover S-533 offers head, face, neck and shoulder coverage, as well as providing eye and face protection to EN166 - liquid splash and low energy impact (grade F) the same classification for impact resistance as safety spectacles! Additional Information Cut to the same design as the S-433, but manufactured using a more durable, soft, quiet, low-linting fabric the S-533 offers unrivalled levels of comfort. The S-533 is available in two adjustable sizes to comfortably fit more wearers: S/M and M/L. When used in conjunction with 3M Powered and Supplied Air systems the S-533 offers an assigned protection factor (APF*) of; Jupiter APF= 40 Dustmaster APF= 10 Flowstream APF= 40 Vortex/Vortemp APF= 40