Features 1. Our sleep noise cancelling earplugs adopt a three-layer noise cancelling design, which applies powerful noise cancelling functions to soft silicone earplugs, with a noise cancelling effect of up to 30 days. After professional certification, it meets the conditions for hearing protection and protects your ears from harmful sounds. 2. Made of ultra soft medical silicone material, it has a delicate touch, is soft and elastic, easy to insert, and has a high degree of fit. Sleeping on the side or wearing it all day is no problem. 3. This noise cancelling earbud allows you to focus on the present, enjoy sleep, study, and work while reducing the interference of snoring and noise. 4. These noise cancelling earplugs are reusable, damage resistant, and durable. Washable sleep earplugs keep your ears clean and fresh at all times. 5. We have equipped this noise cancelling earbud with a small box for your convenience in carrying. It also ensures that the earplugs are clean and can be easily placed in pockets during business trips or travels. Specification Name: 3-layer noise cancelling earplugs Material: Nano silicone+ABS Size: 2.4 * 2.1cm Weight: Approximately 14g Package Include: Noise cancelling earplugs x1 pair Storage box x1