Please do not use essential oils in the water tank

It is caused by vibrations of the soft palate and other tissue in the mouth

has a firm clasp and is shock resistant

Reduces stressful frequencies without muffling sound

Box - Uvex Com4-Fit Dispenser Refill Uncorded Ear Plugs (500 Pairs | SLC80 22dB, Class 4) Colour_Neon Green Please do not use essentialSuitable for construction, light manufacturing, areas where nuisance noise is present and manufacturing plants with medium level noise area Features 500 pairs loosely packaged Smaller size, suitable for smaller ear canals Excellent noise reduction Ergonomic shape and low expansion rate for comfortable fit Patented x recess reduces pressure build up in the outer ear canal Unique density structure to maximise wearer comfort 'x' grip for easy fingertip