Abstract: A protective headgear can include a core and two or more impact absorbing layers coupled to the core. At least one impact absorbing layer can include a number of impact absorbing components that are configured to absorb and reduce the force of impact incident on the protective headgear. The impact absorbing materials can employ cylindrical segments of viscoelastic foam with a sealed central void to absorb high energy impacts. The protective helmet can reduce the occurrence of concussions and subconcussive impacts to the brain.