The 3M Hood S-655 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 Its respiratory seal is a comfortable, knitted inner collar. Manufactured using a general purpose, fabric, the S-655 is a cost effective, practical powered air solution. In the S-655 ‘starter pack’ you will receive one head harness and one S-605 replacement fabric hood which is quickly and easily exchanged as required. When used in conjunction with 3M™ Powered and Supplied Air systems the S-655 offers an assigned protection factor (APF*) of; Jupiter APF= 40 Dustmaster APF= 10 Flowstream APF= 40 Vortex/Vortemp APF= 40