This sign is designed to inform and instruct all visitors, employees and anyone esle arriving on your site that they need to wear safety helmets for their own protection. The universal symbol and recognisable blue and white colour scheme instantly categorises this as a mandatory sign on sight, keeping employees, customers and visitors informed and safe. The durable PVC sign is easily fixed to a variety of surfaces and is suitable for both indoor and outdoor use. This sign is A4 in size.