Oh, it's just a push and eject thing. Most of them are like that. The only one that has an actual cover is my Retroid Flip.
The "worst" one is the Miyoo A30. I am not sure if it is my unit or the micro SD card that I use but the actual SD card sticks out by about 0.01mm, my skin can feel it grazing the SD card as I move my fingers over it.
Nah it was me, I didn't realise it wasn't in properly lol.