EP3 Sonic Defenders protect your hearing without interfering with your ability to hear routine sounds or conversations. Double-flange stem design fits most people and provides a Noise Reduction Rating of 16dB. Sounds, at safe levels, are allowed to pass through into the ear canal, while noises above 85dB are greatly reduced via the patented Hocks Noise Braker filter. EP3s include attached stopper plugs, which can be inserted to block out lower-level noise in situations where hearing ambient sounds or conversations isn't critical. Right/left color-coded and made from a soft but durable, hypoallergenic polymer. Ergonomically shaped, with an adjustable-stem design, to provide a secure fit, all-day comfort, and extended product life. Low-profile design means they can be worn while wearing a helmet or mask or while using a phone or headset.
Measure the distance from the top to the bottom of your ear's Helix Bowl to determine which size will best fit your ear.
Medium = 1"
Large = 1 1/8"
For more comfort the earpieces can be adjusted by trimming the helix portion, and the stem position (slide out) can also be adjusted.