Check the listing for details. ISOtunes WIRED Earplug Headphones - 29 NRR. Color: Black, Condition: New. Listed at 39.99 USD. This listing is operated by ISOtunes Audio, creators and manufacturers of ISOtunes® Noise Isolating Earbuds Enjoy your favorite music even in noisy environments with the ISOtunes WIRED Noise-Isolating Earbuds. The tips are made of comfortable memory foam that fits snugly inside the ears and muffles sounds (up to a 29 dB rating). These headphones allow for clear phone conversations through the noise-cancelling mic. These are OSHA-compliant headphones, making them safe and suitable for busy professional workshops.ISOtunes WIRED Noise Isolating Earbuds, 29 dB Noise-Reduction Rating, Noise Cancelling Mic, OSHA Compliant Earplug Headphones:Noise-blocking eartips made with comfortable and ergonomic memory foamCustom-fit memory wireWaterproof and sweatproof earplugsLightweight and comfortableBuilt-in volume and microphone controlMicrophone reduces background noise Direct purchases from ISOtunes Audio guarantee direct customer support, 1-year warranty, 30 day money back guarantee and free shipping. For additional product and company information visit our website.