(c) Supraglottic airway device inserted too deep, too small size of SAD, or hypoinflation of the cuff in a manikin. (d) Supraglottic airway device inserted too superficial, too large size of SAD, or hyperinflation of the cuff in a manikin. (e) Downfolding of the epiglottis in the bowl of the SAD in a manikin. (g) Lack of seal between a SAD (non-inflatable cuff) and the epiglottis in a patient. (h) Same as in (c) in a patient. (i) Same as in (d) in a patient. (j) Supraglottic airway device with the epiglottis in the bowl, showing posterior epiglottis (no obstruction). (k) Folding in the proximal polyvinyl chloride cuff causing a leak. (l) Tip of the distal cuff folding over. (m) Tip of the distal cuff sits between the vocal cords. (n) Downfolding of the epiglottis by the distal cuff of the SAD. (o) Folding double of the epiglottis in a patient.