The PS57 Expertbase Safety Helmet in royal blue features a durable high-density polypropylene shell designed for electrical safety, providing insulation up to 1000Vac or 1500Vdc (EN 50365). Its unvented design ensures safe use in electrical environments. Equipped with a comfortable 4-point textile suspension harness and an adjustable wheel ratchet headband (55-62cm), the helmet offers a secure, customised fit. A soft foam sweatband enhances comfort during long wear. Compatible with PW42 and PS42 clip-on ear muffs and a variety of accessories, this helmet meets CE Category III standards, offers protection against lateral deformation, and has a recommended lifespan of up to 7 years if undamaged.