Review (1/5): Total garbage
There are not at all as advertised. They are NOT silicone. Certainly not food-grade silicone. They are plastic like a milk jug. They are so small and shallow that even on a very small person they cause a mask to fall down if you move your jaw at all, defeating the purpose of framing out the material so it doesn’t get in your mouth when you talk. If you stay perfectly still, it holds the mask so strangely away from key regions like the top and side that it’s rendered ineffective as protection. I can’t believe they charge $10 for these, or even waste time and materials making them.