Secure Fit: The double-seamed elastic band design enhances stability, allowing it to stretch to about 5.5 inches. This ensures that the earplugs remain securely in place even during activities, providing long-lasting waterproof protection Waterproof: This disposable ear covers has excellent waterproof effect and is made using high-pressure technology to ensure that the ears can stay dry Convenient disposable use: The large package includes 300 ear tips, suitable for long-term use or sharing with multiple people, meeting the needs of various occasions such as family, travel, fitness, etc Versatile Usage: These ear protector are suitable for a wide range of scenarios, including swimming, showering, water activities, beauty treatments, and medical environments. They are an essential protective item in our daily lives High Strength Durability: Made of high-strength materials, these ear tips can withstand repeated pressure and stretching, are not easily torn, suitable for various high-intensity work and sports scenarios 300 PCS Clear Disposable Ear Covers