【Colors】 ・Black ・White 【3-WAY】 This product offers three ways to use it depending on the situation. ① Use only the silicone earplugs ② Use the silicone earplugs with the slow-rebound urethane inserted ③ Use the sponge earplugs 【Adaptable Earplugs】 This product includes 3 pairs of sponge earplugs, 2 types of silicone earplugs, and another pair of different types of sponge earplugs. It also comes with a case to store the earplugs and a case for storing the sponge earplugs. 【High Performance Noise Reduction】 Effectively shuts out surrounding noise, achieving noise-canceling performance. 【40dB Noise Reduction】 Noise reduction of up to 40dB, twice that of regular earplugs. Ideal for studying, sleeping, working, concerts, and general hearing protection in noisy environments. 【Sophisticated Design】 With a design that looks like you're wearing earphones, it fits snugly in your ear and won't fall out. 【Ergonomics】 The earplugs are made of foam urethane and feature an innovative ergonomic design, developed to fit the Japanese ear canal. They are soft and low-pressure, comfortable even when worn for long periods, and further improve the fit without causing pain in the ear canal, preventing them from falling out during sleep. 【Easy to Clean】 Washable and water-washable. They can be used repeatedly, making them hygienic and sustainable. You can also wipe off dirt with a damp cloth for maintenance. They offer excellent cost performance compared to disposable earplugs. 【Wide Range of Applications】 Suitable for use at home, hotels, work, study, sleep, on airplanes, camping, shooting, meditation, concerts, parties, live music events, swimming, public transportation, etc. They block out unpleasant sounds when you are bothered by surrounding noise.