The unique bionic design makes ear plugs fit the shape of auricle, features a unique design, great for Side Sleepers and won’t fall out even side sleep, and no foreign body sensation. 3-layer oval sound insulation design, better block noise, ultra-thin and ultra-comfortable, earplugs are easier to put in and take out, no discomfort or pain, suit for most sizes ear. Washable, reusable, safe and comfortable to use. Included a plastic storage box, which is easy to carry.