The Skullerz 8943F(x) Universal Bump Cap Insert with flexible hinged wings delivers impact protection and an enhanced fit for larger head sizes and hairstyles. This lightweight, breathable and trimmable impact-resistant insert easily fits into any baseball cap, hat or other headwear for protection against bumps, scrapes, bruises and other minor head injuries. This bump cap is specifically designed to form to and protect varying head sizes and hairstyles, such as dreadlocks or larger natural hairstyles. The front and rear wings flex in and out, while the hinged design in the back allows hair to escape and lay flat, offering a non-bulky fit. With flexible sides and convenient trim-to-fit customization, this bump cap insert easily fits a variety of hats/caps and head shapes. The shell is made of lightweight, durable polyethylene with a ribbed top for enhanced crown impact protection. Hard Hat Style: Flexible Hinged Bump Cap; Material(s): Polyethylene; Thickness: 5 mm; Color(s): Charcoal.