The Vertex Best helmet sets the standard in head protection for working at height and rescue. The adjustable head band ensure a secure fit, whilst the strong chin strap limits the risk of losing the helmet during a fall. The solid shell reduces ventilation but does meet the requirements of EN397 and EN50365 for electrical insulation and molten metal splash. This helmet is a compromise between the sport and industrial standards. It meets the sport standard requirements for chin strap strength and the industrial requirements for protection against falling objects.