Abstract: A small and free type slider for a slide fastener fitted to the slit of an inside pocket of a wearing article can effectively prevent it from scraping the edges of the fabric of the pocket and operate smoothly, buffering any undesirable collision between the slider and the edges of the pocket. It comprises a slider body having an upper wing, a lower wing and a guide post rigidly linking the upper and lower wings and a pull tab holder projecting transversally from about a center of the upper surface of the upper wing, a pull tab directly or indirectly linked to the slider body and a pair of protuberances are projecting upward from the upper surface of the upper wing in front and at the back of the pull tab holder respectively and spaced apart from the pull tab holder.