An abrasive blasting helmet must not only supply breathing air, but must also offer protection to the head, eyes, face, neck and shoulders (DGUV Regel 112-190 (to date: BGR/GUV-R 190) governing the use of respiratory protective equipment, December 2011, Sections 3.2.10.1.3 and A 1.4.1.3.3 at www.dguv.de/fb-psa, in German)