ER-20 Pro Universal-fit Earplugs in-ears Moisture build-up from sweat and

Moisture build-up from sweat and body oils can ruin the performance of IEMs

For those who want nothing more than to shut out all the noise around them and get a good night’s sleep

2X-S has the same sound signature and drivers as our 2MAX

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ER-20 Pro Universal-fit Earplugs in-ears Moisture build-up from sweat andA low cost, high fidelity filtered earplug that closely replicates the ears natural frequency response. Music sounds clear and natural, with levels reduced by 20 dB to protect your hearing. Made by Etymotic Research, the ER 20 uses secure triple flange silicone insertion plugs for a secure seal and comfortable fit. Available in regular and large sizes. Supplied with an airtight aluminum storage case.