PPEHead ProtectionExpertbase Safety Helmet High-density polypropylene shell helmet, 4 points plastic suspension harness. Buckle adjustable size 55-62cm. Soft sweat band included.Unvented helmet shell for safe use with electrical applications Electrical insulation up to 1000Vac or 1500Vdc (EN 50365)4-point plastic suspension harness for wearer comfort, safety and easy cleaningSize adjustable headband via slip ratchet systemSoft foam sweat band includedAvailable in multiple colourwaysElectrical properties ( 440Vac)Compatible accessories availableCompatible with PW42 and PS42 clip-on ear muffUp to 7 years lifetime from manufacturing date (as long as undamaged)