 The ProSeal Laryngeal Mask Airway PLMA, LMA North America Inc. is the pre-existing double-lumen supra-glottic device that allows gastric drainage and pressure release. Its design is based on the LMA with an added lumen. It is reusable. The ProSeal exhibits an unsuccessful ventilation rate of 9, and a first time insertion failure of 12.7. Currently, the ProSeal exhibits a 3 incidence of foldover during insertion that prevents it from functioning properly. Due to differences in design, we postulate that the LTS-D will have a lower incidence of foldover than the PLMA. 