The Skullerz 8947 Lightweight Baseball Hat features the Skullerz 8943F(x) hinged impact-resistant bump cap insert for flexible, breathable protection against bumps, scrapes, bruises and other minor head injuries. This lightweight polyester hat is not stiff or bulky, and also features breathable laser-perforated side and back panels for maximum airflow. Designed with a buckle closure and adjustable rear sizing strap for a custom fit. Reflective accents and piping help ensure workers are seen in low-light conditions. Not bulky like a hard hat, bump caps are typically worn in spaces where worker-generated impact head protection is needed, like low ceilings, beams, low pipes and other bump hazards. They are ideal for mechanics and airline baggage handlers, as well as workers in factories, in-home services and other industries that do not require safety hard hat protection.