When outdoor hobbies and activities get hard on your hearing the Sound Soldier Duo Ear Plug is a sound investment. They are designed for all-day comfort with a series of baffles that will not leave your ear canals sore. Color-coded to choose the level of protection you need. Placing the plugs in yellow end first will gently baffle and allow you to hear soft, ambient sounds. Easily remove and switch to the black end and you get protection from more harmful sound levels up to 22 dB.