Our Soft Foam Bullet Shape Earplugs for Sleeping reduce noise by 27dB (a high level), helping you achieve the best Noise canceling possible, Perfect for studying, Sleeping, and Swimming. These earplugs are comfortable, and easy to fit while you sleep. Utilizing a special BPA-free Silicone formula, they expand slowly to the shape of your ear, giving you plenty of time to fit them comfortably. These earplugs are 100% latex free and are hypoallergenic.