A helmet system that enables a user of the helmet system to customize the helmet system according to personal taste, a task at hand, responsibilities within a tactical group (e.g., communications, command, etc.), and/or according to other parameters. The customization of the helmet system may include a customization of electronics modules carried on the helmet system that optionally provide communications, environment detection, health or biometrics monitoring, power, information transmission/reception, information processing, and/or other functionalities. The customization of the helmet system may include a customization of structural components that enable the user to balance the structural protection provided to the user against other considerations. The other considerations may include, for example, weight, form factor, comfort, and/or other considerations.