A player's batting helmet must fit securely. Under Armour does not promise anything but. They know that loose helmets will not withstand the force or absorb . Therefore, they supply the athlete with helmet sizes matching their own head measurements.Â Under Armour's latest generation in headwear combines cutting edge technology with what's trending most often today.Â These helmets come in a variety of different colors, designs, and finishes. As a result, it is a customizable haven.