Esophageal manometry evaluates the motility of the esophageal body and the swallow-related relaxation of the esophagogastric junction (EGJ) to diagnose esophageal motility. There are two pressure measurement systems: water-perfused system and intraluminal transducer system. Conventional manometry measuring pressures at several sites of the esophagus used to be performed. Nowadays high-resolution manometry (HRM) measuring pressures at 1–2 cm apart is a gold standard to evaluate esophageal motility. Location of the EGJ is changed with respiration; therefore, a single sensor cannot measure pressure of the EGJ continuously. The sleeve sensor which has a 6 cm pressure-sensitive membrane using the water-perfused system is developed to measure pressure of the EGJ continuously. E-sleeve function with HRM allows measuring pressure of the EGJ continuously. The Chicago ClassificationChicago Classification is a systematical classification of esophageal motility disorders. There are several parameters evaluating esophageal motility: integrated relaxation pressure (IRP) for swallow-related EGJ relaxation, distal contractile integral (DCI) for esophageal contraction vigor, contractile front velocity (CFV) for velocity of peristalsis, and distal latency (DL) for latency between swallow and the time peristalsis reaches the distal esophagus. When there is a large break in peristalsis, CFV cannot assess the velocity of peristalsis precisely. Thus, CFV is no longer used, and DL is used to evaluate presence of spasm in the Chicago Classification v4.0.