HARD HAT – WAVE EASY LOCK CSA Z94.1-05 TYPE 1 CLASS E Head-Guard CSA Type 1 Class E 100% HDPE Outer Shell Crown impact protection 4 point nylon suspension Ratchet sizing adjustment. WAVE ANSI EASY LOCK SUSPENSION Provides crown impact & penetration force transmission protection and dielectric protection up to 20kv. Shell molded from 100% high-density polyethylene with special UV radiation protection additive. Low profile design offers improved comfort.                         Show More Show Less