FOAM TIPS/1 standard, 1 slim.

CEP offers exceptional hearing protection while providing the clearest speech signal attainable. A miniature transducer is coupled with a foam ear plug to yield a high quality, lightweight communications device. Users find that the stress of air operations is greatly reduced and results in decreased pilot fatigue.
CEP002EMXT Foam Ear Tips 1-Pair Standard, 1-Pair Slim
CEP002ESTT Foam Ear Tips 2-Pairs Standard
CEP199ESTP Foam Ear Tips 6-Pairs Standard
CEP002ESLT Foam Ear Tips 2-Pairs Slim
CEP199ESLP Foam Ear Tips 6-Pairs Slim
CEP199ESHP Foam Ear Tips 6-Pairs Short