Patent attributes
A helmet, such as a football helmet, includes a shell portion, a retention assembly, and a face guard assembly. The shell portion includes: an outer shell; an inner shell spaced apart from the outer shell, the inner shell and the outer shell defining an interior space between the inner shell and the outer shell; at least one fastener assembly extending from the outer shell to the inner shell through the interior space; and at least one inflated bladder positioned in the interior space defined by the inner shell and the outer shell. The shell(s) can be formed from lightweight materials, such as carbon fiber. The retention assembly is connected to the inner shell for securing the helmet to a head of a wearer. The face guard assembly is connected to the outer shell and is positioned to protect at least a portion of a face of the wearer.