Ventilation allows free air flow between the helmet and its harness Peltor Uvicator Technology indicates when it^s time to replace your helmet by changing the disc colour An extended edge on the rear provides extra protection for the sensitive neck area The G2000 is an extremely high class CE marked hardhat with effective shock absorption Meets European standard EN397 with approved extra requirements for lateral deformation (LD), molten metal splash and low temperature (-30°c) Blu