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EP9 Sonic Defenders® Cobalt Max

Full-Block Flanged Earplugs

EP9 Sonic Defenders Cobalt Max hearing protectors

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Noise Reduction Rating 26dB
Color Blue
Size S, M, L
Filter No
Stem Triple Flanged
Radio Comm Compatible No
Included Lanyards Permanently Attached
Features Metal Detectable


EP9-BL-MPR 084871319652
EP9-BL-MPR-BULK 084871319683

For detailed specifications, click here.

EP9 Sonic Defenders® Cobalt Max earplugs utilize a soft, adjustable, triple-flanged stem to seal the ear canal and block out potentially harmful noises, providing an impressive Noise Reduction Rating (NRR) of 26dB. They’re a great choice for applications where a high level of protection against continual noise is desired and the ability to hear ambient sounds or conversations is not a priority.* Constructed of a proprietary metal-infused polymer that’s detectable by industrial scanners, EP9s are bright blue in color and feature permanently attached lanyards, making them ideal for use in food and pharmaceutical processing and similar industries. Their patented EarLock® retention rings lock the earplugs in place, while soft, adjustable triple-flanged stems provide secure seals in the ear canals.

Sonic Defenders Cobalt Max are made from a soft but durable, hypoallergenic polymer and are ergonomically shaped, providing all-day comfort and an extended product life of up to 6+ months, depending on usage and care. Their low-profile design means EP9s can be worn while wearing a helmet, mask, or supplemental hearing muffs. Available in blue only.

EP9s are available in small (S), medium (M), and large (L), with mediums fitting most people. For best fit, click on the small Sizing Chart image at left. EP9 Sonic Defenders Cobalt Max are sold as a single left/right set or in a box containing 25 sets. Each set is packaged in a convenient carry case and includes a permanently attached polymer lanyard.

*For hearing protection with the ability to hear lower-level sounds and conversations, use filtered EP8 Sonic Defenders Cobalt earplugs.
  • “Full-block” design provides 26dB Noise Reduction Rating (NRR) to minimize potentially harmful sounds
  • Metal-infused for detection by industrial scanners; bright blue in color for easy visual detection
  • Patented EarLock® retention rings utilize seven contact points to lock earpieces in place and fit the same way every time
  • Soft, adjustable triple-flanged stems provide secure seals in ear canals and all-day comfort
  • Made from hypoallergenic, medical-grade polymer that's soft, comfortable, and durable
  • Low-profile design allows you to keep them in place while wearing a mask, helmet, hat, or supplemental hearing muffs
  • Permanently attached 26” polymer lanyard included

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Excellent Ear Protectors

I wear them when ever the noise levels will be high such as in restaurants or in church during contemporary music. Their "locking" design keeps them in place and they are not very noticeable. By proper care and washing, they work for a long time - up to a year without replacement.

Reviewed by Dean Luedtke (Posted on 12/7/15)

Sonic ear plugs

They seem to work good on road noise muffles loud vehicles but you can still talk to each other with out screaming. I have not used them for shooting yet to put them to the test.

Reviewed by Justin Rouanzoin (Posted on 8/16/14)

Fantastic Ear Protectors

I use these for multiple purposes. I use a lot of power tools in my wood sculpting and cannot use bulky ear muffs for sound protection because I also wear protective glasses and a dust mask. The Sonic Defenders are the perfect solution and are most comfortable as an added bonus. I also now use them while riding on my lawnmower for 90 minutes

Reviewed by Greg the Box Sculptor (Posted on 7/18/14)

Ears Defended...

I just love these ear defenders. They are sleek and stylish and barely there. I wear them for Skeet Shooting, and they are great. I'm surprised by the comfort and ease of insertion. I chose this type over muffs to comfortably wear my shooting glasses with comfort. I can use them whenever sound levels get too high, especially in my workshop. I can't say enough about the SureFire products. I have a couple of their flashlights and love them, and just recently found their ear defenders. What else do they carry?

Reviewed by Jason (Posted on 2/11/14)

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