Product: Sleep Earplugs Size: Approximately 5cm (length) x 7cm (width) Color: Black ⭐️Free Shipping⭐ Please check the actual product photos for the product condition♪ We are closed for shipping on weekends and holidays ( ˊᵕˋ ) Click here for a list of #hikautamama's products ✨☜ Noise Reduction: According to test results, link dream noise-canceling earplugs can effectively reduce noise by approximately 28 decibels. S25-30 0022 ◉◉◉ Earplugs for sleep, quiet sleep, noise reduction value 28dB, hyperacusis, noise reduction, for use on airplanes, for studying, noise countermeasures, flexible soft, doesn't hurt ears, silicone, 3 sets (S, M, L sizes), washable, noise reduction 28dB, black, with storage case.