Thanks to the memory effect of the special foam, ComplyFoam molds perfectly to the ear canal, preventing any external noise from entering the ear. This allows you to listen at lower volumes since fewer ambient sounds need to be drowned out. Experience your earbuds anew. A well-fitting earbud that blocks external noise from entering and internal noise from escaping sounds better. They provide a secure fit in the ear. In addition to maximum isolation and improved sound quality, ComplyFoam tips also stay in the ear better. Since they conform to the ear canal, the tips are "anchored" and don't slip out as easily as regular silicone tips.