This is the case I use for my Osmo Mobile 2. It fits exactly what you need as the OM2 has no gimbal lock. It offers enough space for the Osmo base and an external microphone. It has several separate cases to store some of the things that might scratch each other. I like looping it over the front or back. If I ever manage to afford the Osmo Pocket, I might buy another one for it.
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