Otoplastics / Ear buds / ear plugs
This method of ear protection includes plugs or otoplastics, which offer light, moderate, and heavy noise reduction. The ear plugs, ear buds, and ear stoppers are placed into the end of the ear canal. Most ear plugs allow low level surrounding noises to pass through, while the harder and heavier models can reduce noise up to 30 dB. Their greatest advantage is that the user is not completely closed off from the surroundings by wearing hearing protection. Furthermore, ear plugs are less visible, which can make the user for more at ease.