dust protector for sipeed 6+1 mic array

I bought a [Sipeed 6+1 mic array](https://www.seeedstudio.com/Sipeed-6-1-Microphone-Array-for-Dock-Go-Bit-p-2875.html) from Seeedstudio, to experiment with embedded speech processing.
I wanted to make sure my MEMS microphones are safe from dust, so I designed and 3d printed a dust cover, I covered the mic holes with a microfiber cloth, but I think any other not too thick cloth or thin foam sheet will do the job.
I haven't wired up the system, so i don't know how the cover affect the sensitivit