1.Nano silicone+slow return strong earplugs, 2 different noise reduction methods.2.Equipped with a flexible fin design, it is comfortable to wear, without any foreign objects, and fits the shape of the ear, so it 't fall out even when lying on the side or rolling over.3. noise reducing earplugs, isolating ambient sound and ensuring comfortable sleep.4.Can be repeatedly cleaned and used, healthy and hygienic, environmentally friendly and durable.5.Sliding cover storage box, small and exquisite, easy to carry.Feature: Noise weakenedApplicable scene: sleep noise reductionColour:blackMaterial:Silica gelSize:35 x 20 x 28mmPackage Contents:2 x noise reduction ring2 x single layer earplugs8 x sponge earplugsOnly 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.