To provide an air type massage tool that can perform massage of an armpit of a user and is to be removably mounted.SOLUTION: A massage tool 2 includes: an armpit air bag 10 constituting an armpit air chamber 10a; and a supporter 14 for holding the armpit air bag 10. The armpit air bag 10 is arranged to allow the armpit air chamber 10a to be located under an armpit of a user when the massage tool 2 is mounted. When pressurized air is supplied to the armpit air bag 10, the armpit air chamber 10a is expanded toward an armpit so as to pressure an armpit.SELECTED DRAWING: Figure 4
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