You will need a sweat soaker for mask.
I really love the grips...once I figured out how to get them on, lol. They really do save me worrying from throwing my grips across the room, and I don't get cramp in my hands anymore. I can't use the silicone mask right now because it slides down my face when I'm working out, which then cuts out the workouts. I have ordered some fabric VR face masks to go under the headset and I hear that will solve this problem. I just wish I knew about these masks when I was buying it so I could start using it sooner.