aeromax personalized firefighter helmets (yellow) aeromax the aeromax jr. fire fighter helmets are adjustable and fits most children ages 3 to 12. great construction with durable plastic and great attention to detail. a great match for the aeromax jr. firefighter suit in black or tan. aeromax quality products make great gifts for girls and boys. personalized on rear brim of helmet. 14 character limit. this item has been tested to meet usa safety standards for children's products.