Aviation helmets are not only supposed to provide protection during air travel, but comfort as well. That is why we at Aviation Survival are proud to carry these hush kit helmet cups from Boxell Aerospace! As a leading manufacturer of aerospace equipment, you know that anything from Boxell will be of the highest quality possible. These helicopter helmet hush kits are used in ear cups to lower outside noise from penetrating the ear cup seal. They are also made from memory foam to provide maximum comfort during your missions. You deserve the best when it comes to your helmet, so these cups are a no-brainer! If that was not enticing enough, then these hush kit cups will be able to fit all helmet ear cups, as well as any set of headset ear cups. We can guarantee that this kit is the last set of ear foam replacements you will ever buy.