Xperia Ear Duo Case

Case (Cover?) of Xperia Ear Duo (XEA20) for exercise.

I like Xperia Ear Duo, but unfortunately, the glueing of it is not perfect.
By high humidity and temperature, the iron piece of my earphone came off.
This case prevents sweat so as not to come apart.

Since the touch panel is not covered, you can control the functions normally.
Not surprisingly, the earphone with the case can't fit in the charging case.
Holes are for sensor and mic.