Feature: 1. FOAM MATERIAL: Noise cancelling earplugs are made of premium sponge material, lightweight and soft, slow backbounce, breathable and not stuffy. 2. APPLICABLE SCENES: Noise cancelling earplugs are perfect for sleeping, snoring, studying, working, traveling, concerts, relaxing, flight discomfort and so on. 3. ERGONOMIC DESIGN: The foam earplugs are ergonomically designed to fit around the shape of the human ear, with the right center size to fit the shape of the ear, breathable and comfortable. 4. COMFORTABLE TO WEAR: You won't feel anything in your ears when wearing these earplugs, no discomfort, you can turn over or sleep on your side, reusable. 5. 4 PAIRS: The package includes 4 pairs of soundproofing earplugs, enough quantity to meet your actual needs. Specification: Item Type: Foam Earplugs Material: Foam Specifications: 4 Pairs. Package List: 4 Pairs x Foam Earplugs2 x Stoage Box