4 Pair Tree Shaped Silicone Relax Sleep Ear Plug Reusable Swimming Anti Noise Reduction Removable Corded Soft Earplugs For Sleeping Hearing Ear Protection Earmuffs Noise Prevention For Airplane Travel Work & Sleep Ear Plugs Silicone EarBuds Ear BudsNoise Reduction & Ear Protection: NRR 25 (Noise Reduction Rating), protects your hearing from loud noise and high damaging decibel levels, avoiding depression and tinnitus. Safety Silicone Material: These earplugs are made of soft silicone material, designed with a comfortable shape that adjusts to your ear; Washable, reusable, safe, and comfortable to use. Comfortable Ear Plugs: Earplugs are easier to put in, more comfortable, and they stayed put.