NOISE REDUCTION - Earplugs are reusable and hearing protection, made from soft silicone. They reduce most noise and help you to get in your bubble. They have a noise reduction rating (SNR) of 25dB to 35dB.(Please note: The sleeping ear plugs can block some noise to a acceptable volume, but not totally silent) SAFE REUSABLE - The earplugs are made of super soft food-grade silicone material, which do not stick to dust and have a delicate touch, with good elasticity and memory function, and the ear plugs for sleeping noise cancelling can be pulled at without deformation. ERGONOMIC DESIGN - The silicone ear plugs can perfectly fit your ear shape & 't fall off easily. Even if you lie on your side or turn over, The sleeping ear plugs not easy to slip off and no pain to wear for a long time. EASY TO USE - These earplugs are easy to insert and when you wear them correctly, they don't stick out of your ears. They come in 3 sizes (S M L), if your ears hurt, it is best to take a smaller size. If the earplugs do not reduce sound sufficiently or fall out, it is best to try on a size larger. HEARING PROTECTION - If you are interested in our ear plugs, please try them out and give yourself a comfortable experience. We believe it bring you a better quality of life.(Please note: If the earplugs do not reduce sound sufficiently or fall out, it is best to try on a size larger.) Colour:Green Material:Silica gel Package Contents: 2 pairs of earplugs Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.