Reusable soundproof silicone earplugs designed specifically for sleep, offering different noise reduction effects depending on the scene (NRR 25dB~33dB), reducing background noise while maintaining clear sound. They fit snugly in the ear canal with a 360-degree seal, even when tossing and turning during sleep. The design prevents insertion deep into the ear, ensuring comfort during extended use and preventing strain on hearing. Highly durable, made of high-quality silicone, resistant to dust, and will not deform even after long-term use. They return to their original shape even when stretched, are easy to clean, and can be reused. Convenient to carry, comes with a compact carrying case, and is available in two sizes. Provides an optimal fit for various ear canal sizes. Versatile use, not only for sleep, but also for concert viewing, noisy work environments, studying in the library, and various other situations. (*Note: Does not create complete silence, but reduces noise to an acceptable level.)