Reduce Noise - Provides safe, non-toxic, non-allergenic waterproof protection and protects hearing from loud noises. Noise Reduction Rating (NRR) is 33 dB. COMFORTABLE FIT - FBFL multi-purpose earplugs are ideal for sleeping, snoring, swimming, studying, bathing, traveling, loud events, concerts, flying discomfort, motorcycles and more. Lab tested and proven to help relieve airplane ear pressure and pain. flight. The Loop's rounded shape naturally fits your ear or pinna. Soft as a Pillow, Protects Hearing - Made of ultra-soft silicone material, you will barely feel anything in your ears when wearing these sleep earbuds, no discomfort or pain, just undisturbed peace and quiet. These earplugs are non-toxic. Prevent ear infections - safe to use with ear tubes. Provides protection after ear surgery. Also helps prevent surfer's ear (exostoses). Reusable and washable - no need to keep buying new ones. You can safely wash our FBFL Silent Silicone Earplugs and reuse them for years - a one-time purchase that's worth every penny.