The present invention relates to an ear plug onto which parts are positioned, ensuring closed and protected operation, comprising a light main body (20) compared to the existing techniques, onto which parts are positioned, which enables the system to operate as closed and protected, at the same time a main body (20) enabling the insulation by being inflated inside the ear, which has interior and exterior layer and is positioned to one of the edges combining with each other with right angle on the said main body (20) and a balloon (50) bearing the entire mechanism by being kept inside the ear as a result of being inflated thanks to the lightness of the parts, said main body (20) in which the liquid used is stored for said balloon (50) to be inflated and ensuring the liquid to be pumped and transmitted to balloon as a result of it being squeezed using hands, the reservoir (40) positioned at the other end, a valve (30) which is positioned onto the main body (20) at the intersection point of the reservoir (40) and balloon (50), which enables the balloon (50) inflated to be deflated after usage and a flexible stop (70) made of flexible material positioned on the liquid canal (60) connected to said valve (30), opening with the effect of pressure during the liquid being pumped, capable of taking its former position back with its flexible feature when the pressure is stopped, thanks to which it allows for the passage of liquid with the effect of pressure formed by the force applied to the reservoir (40) and prevents the liquid transmitted to the balloon (50) from coming back with stoppage of force and which may open with the valve (30) when requested upon the balloon (50) inflated being deflated after usage at the will of the user.La présente invention concerne un bouchon doreille sur lequel sont positionnées des parties, assurant une opération en système fermé et protégé, comprenant un corps principal léger (20) par rapport aux techniques existantes, sur lequel sont positi
