This document discusses the history and advances in supraglottic airway devices. It describes how supraglottic airways are placed above the vocal cords, allow hands-free maintenance of an open airway, and can be used for spontaneous or assisted ventilation. The document then reviews the timeline of important supraglottic airway devices developed since 1908. It discusses newer generations of laryngeal mask airways and other single-use devices like the I-gel. Finally, the document summarizes that supraglottic airways provide hands-free airway maintenance, can be used for both spontaneous and controlled ventilation, provide little protection against aspiration, and are useful for routine anesthesia, emergency airway