Brand New Comfort-Gel ear seals with undercut design have 60% more surface area in contact with your head, are 26% lighter and allow 30% more interior room for your ears for quieter, more comfortable flights. Will enhance comfort on all David Clark H10-series headsets and hearing protectors. Sold in pairs. These Gel Ear Seals are a huge upgrade for your older headset , or your aviation headset that uses air cushion seals. Gel Seals are extremely comfortable - you really need to try them to believe it! These are a low-cost upgrade to your headset which will drastically REDUCE pilot fatigue and IMPROVE the fit of your aviation headset.