Silica Gel Noise Reduction Earplugs For Swimming Water Proof Silent Sleeping Student Hearing Protection Full Size Earplugs Features: Versatile design: This Silica gel earplug is not suitable for swimming and water proof, but also can effectively reduce noise and provide users with a quiet sleeping environment. Its full-size ensures that the ear canal is fully covered, effectively isolating external noise interference. Comfortable : Made of soft Silica gel material, the earplug is soft and elastic, can the ear canal comfortably, and will not feel oppressive or uncomfortable when worn for a long. Quiet effect: The internal structure is carefully designed to effectively reduce ambient noise, provide a quiet learning and working environment, and help hearing health. Water proof performance: Specially designed for swimming, effectively water from entering the ear canal, and avoid discomfort or caused by water ingress during swimming. Durability: The earplugs are made of good-quality Silica gel, which is water-resistants and , easy to clean and maintain, and can be used multiple times. It is an ideal choice for students, swimming enthusiasts and people who need a quiet environment. Product Description: Material: Silica gel Application: Water proof, noise-proof, -proof Usage: Direct-insert Size: S, M, L Noise reduction rate: 35% Noise reduction rating (NRR): 35 Packaging: A pair of earplugs (including large, medium and small size replacement head) + plastic storage box + color box packaging (weight 22g)