?PACKAGE INCLUDED?-Our acoustic noise reduction waterproof comfortable silicone sleep earplugs with four pairs of replacement silicone with attached earplug case can not only be carried around, but also can be changed frequently to keep your ears clean. ?INGENIOUS DESIGN?-:The ear plugs adopt a 45-degree slant into the ear, which fits the ear. It won't let the ear plugs fall out halfway, and can be worn comfortably for a long time. ?MULTIPLE USES?-You can use silicone ear plugs in noisy environments such as sleeping, working, studying, swimming, exercising and more. It can help you get to the state you want faster. ?SILICONE MATERIAL?-This ear plugs for sleeping is made of food grade silicone, which is very comfortable and soft, not easy to hurt your ears. ?NOISE CANCELLING EAR PLUGS?-This noise cancelling ear plugs are NRR40 db (40 decibel noise reduction), with 3 layers of sound insulation tapes, which can protect your ears to the greatest extent, reduce noise and reduce interference.