Q:Will they fall off if I shake them a lot, for example playing boxing games or playing with sabers? Do they need to be taped shut?
A:They fit pretty snug on the controllers. No need for tape.
Q:What is the material of this controller protection cover?
A:Transparent silicone. It feels soft and comfortable. I am glad to find a good protective cover for my halo controller.
Q:Will these work with the Quest 1 controllers as well?
A:Sorry they don't work with the quest 1 controller ring which has smaller size than Quest 2's.
Q:Is it stain-resistant? Can it be cleaned?
A:No effect on the sensors
Q:Is the protective cover easy to slide during the game?
A:No, it fits my halo controller perfectly.