PPEHead ProtectionExpertbase Wheel Safety HelmetOur best seller Expertbase Safety Helmet is now available with wheel ratchet adjustment size 55-62cm. High-density polypropylene shell helmet, 4 points textile suspension harness. Soft sweat band included. Spare parts available.Unvented helmet shell for safe use with electrical applications Electrical insulation up to 1000Vac or 1500Vdc (EN 50365)4-point textile suspension harness for enhanced wearer comfort and safetySize adjustable headband via wheel ratchet systemSoft foam sweat band includedAvailable in multiple colourwaysElectrical properties ( 440Vac)Compatible accessories availableUp to 7 years lifetime from manufacturing date (as long as undamaged)Compatible with PW42 and PS42 clip-on ear muff