20 Pairs of Earplugs for Sleeping Spark-Plugs Soft Hearing Protection with SNR 34dB Noise Reduction Plugs for Studying Travel Concerts Fitness Sports about this article Health and security. The earplugs are manufactured They are made from environmentally friendly polyurethane and have been manufactured. Rigorously tested, non-toxic and safe, so you can use them with confidence. The softness and good sound insulation make it an excellent partner for life. The soft foam earplugs are designed to be shaped and adjusted easily. These reusable earplugs can be reshaped to fit most people. all ear shapes, thus forming an airtight seal and optimal protection against noise and water. Easy to use clean, can be washed directly. Anti-Noise Reduction. Can be used such as anti-noise sleeping plugs, travel plugs, soft noise reduction plugs at work or entertainment, etc. Used to improve sleep, concentrate, protect hearing. Soft and comfortable. Our noise canceling plugs bounce back slowly, it's enough for you to adjust the earplug and gently fill the ear canal. The earplugs are ultra-soft and durable. low pressure, they do not cause any pain to the ear canal. Applicable occasions. Earplugs help with hearing loss. home, self-study classrooms, during car, ship and plane travel, factories, construction site etc. Earplugs help with hearing loss. reduce noise and allows you to learn, rest, work, travel, entertain with less noise and more fun! Packing list: 20 pairs of earplugs