Noise Reduction: Noise reduction earplugs for sleeping are made of super soft foam. They have a noise reduction rating (NNR) of 28 to 38 decibels for mid-high frequency sounds and different noise cancellation effects depending on the scene. These earplugs can reduce noise to a minimum. Hearing Protection: These earplugs for sleeping are soft and effectively reduce noise. They protect your eardrum and hearing from loud noises during concerts, festivals, loud events, decoration, sawing, or when riding a motorcycle. Comfortable: Our upgraded soft and lightweight foam earplugs for sleeping are ergonomically designed to fit the shape of the human ear. They cover your ears without penetrating too deeply into the ear canal, protecting them securely. They are comfortable to wear for long periods of time, ensuring they do not fall out. Multi-Use: These comfortable earplugs for sleeping offer hearing protection from loud noises in many situations. These earplugs are ideal for sleeping and help you concentrate while studying, working, or reading. They're also essential for traveling or commuting.