Reduces sound by approximately 40dB. By wearing these when you're concerned about surrounding noises, such as when sleeping, working, studying, or in public transportation, they will block out unpleasant sounds. They maintain their elasticity even after long-term use, and can be washed with water to be reused, making them hygienic and economical. After use, wash with water, dry, and store in the included case. Earplugs for sleep, complete soundproofing, restful sleep, noise canceling, high performance, 40dB noise reduction, comfortable sleep, noise reduction, relaxation, airplane, study, washable. Shipped in simple packaging. 56-17600