Feature: 1. Using the heavy duty keychain earplugs carrying case, which is convenient for travel or to carry and use, you can use the ear plug with confidence 2. The carrying case uses a sturdy metal structure, waterproof gaskets, and a sturdy brass O loop. To keep hearing from dust and moisture 3. These silicone earplugs can relieve earaches caused by air pressure changes during takeoff and landing of airplane travel, making your flighting more enjoyable 4. The silicone earplugs are non , washable and reusable, ensuring daily use. Silicone earplugs fit most ear canals, which is light, soft and comfortable 5. The earplugs will not completely block all noise, but will maintain the quality of the music, keeping the volume at a safer listening level. Therefore, it is not recommended to use them for sleeping, hunting, shooting, riding motorcycles, etc How to Use: Usage: In ear Wearing method: Gently pull up the upper part of the ear, align the earplugs with the ear canal, and gently rotate to the appropriate position. This product can be used and cleaned repeatedly. Specification: Item Type: Ear Plug Aluminum Box Size: Approx. 4.2 x 2.5 x 2.5cm 1.7 x 1.0 x 1.0in Filter: Approx. 0.8 x 2.5cm 0.3 x 1.0in Earplugs: Approx. 2.5 x 1.5cm 1.0 x 0.6in Material: Aluminum, Silicone Application Scope: DJ, Bar, Rock, Party, Concert, Flying and Other Activities Earplug Noise Reduction(SNR): 27 DB Filter SNR: 27DB NNR:25DB Efficacy: Hearing Package List: 1 x Aluminum Box 2 x Ear Plug 2 x Filter✓The earplugs will not completely block all noise, but will maintain the quality of the music, keeping the volume at a safer listening level. Therefore, it is not recommended to use them for sleeping, hunting, shooting, riding motorcycles, etc. ✓Using the heavy duty keychain earplugs carrying case, which is convenient for travel or to carry and use, you can use the ear plug with confidence. ✓These silicone earplugs can relieve earaches caused by air pressure changes during takeoff and landing of airplane travel, making your flighting more enjoyable. ✓The carrying case uses a sturdy metal structure, waterproof gaskets, and a sturdy brass O loop. To keep hearing from dust and moisture. ✓The silicone earplugs are non , washable and reusable, ensuring daily use. Silicone earplugs fit most ear canals, which is light, soft and comfortable.