Manufactured using a general purpose, cost effective fabric, the S-133 Head Cover is the entry-level head cover for powered air respiratory protection, Head cover with integrated head suspension providing head and face coverage, Provides eye and face protection to EN166 - liquid splash and low energy impact (grade F) the same classification for impact resistance as safety spectacles, Excellent field of view, Ready to use out of the box, Excellent field of view, particularly downwards.When used in conjunction with 3M Powered and Supplied Air Systems the 3M S-133 offers and assigned protection (APF,) of:Jupiter APF = 40TR300 APF = 40V500 APF = 40, Assigned Protection Factor (APF)