With these Undercut Comfort Gel Ear Seals, the world-renowned David Clark Company proves once again that the best can indeed get even better. With their hybrid construction of gel and temperature-sensitive foam, these state-of-the-art ear seals provide even more form-fitting comfort than DC's legendary gel ear seals. These new, undercut seals are an incredible 26% lighter than legacy gel seals and provide 60% more surface area for even greater pressure dissipation. Their interior volume is also 30% greater for additional ear space. Will fit all headset models in the H10 series. An incredibly priced, high-value upgrade that takes aviation headset comfort to a whole new level.