Elvex Blue is a plug for today's demands. It meets the requirements of both users and safety and health professionals. Excellent attenuation. High level of hygiene. Visually easy to monitor. One size fits all. Easy to insert. Slow expansion time for easy insertion. Comfortable low pressure foam. Easy to read usage instructions, in English, Spanish, and French. Good sound reduction properties.
Noise Reduction Rating is 32 dB, and the test was performed to ANSI S3.19-1974 at an independent and certified laboratory