Arai Corsair-X RC HelmetFeatures intermediate oval shape which fits the majority of head shapes in the North American markets Strong, flexible and light carbon fiber outer shell is reinforced with Peripheral Belt (extending across the shell's forehead area above the eye port) PB SNC2 Shell Z Resin developed and blended in house, bonds the many layers and materials of the shell more securely using less resin, improving shell strength as well as reducing weight Internal Air