Jaco Enterprises
- Offers a neoprene ear cover as well as moldable plugs to help prevent swimmers ear.
- http://www.earbandit.com/

Silencio/Safety Direct, Inc.
- Silencio and Rig products featuring hearing protection and safety glasses.
- http://www.silencio.com/

EarPlugsOnline.com
- Offers NRR 34 rated reusable ear plugs that block out water as well as sound.
- http://www.earplugsonline.com

Electronic Shooters Protection
- Provides custom, in-the-ear hearing protection for shooters, instructors, hunters, and outdoorsmen. Permits hearing the safe range of sounds but not damaging noise.
- http://espamerica.com

Hearos
- Ear filters and guards for noise, water and wind protection.
- http://www.hearos.com

E.A.R. Inc.
- Presents a broad line of hearing protection products including a range of passive and active ear plugs.
- http://www.earinc.com/

Industrial Health
- Industrial Health provides OSHA audiometry (hearing testing), respirator clearance evaluation, and respirator fit testing (US).
- http://www.indhealth.com