Backplate for masks

The back plate is an important fastening element in my masks. This design was developed by me about 5 years ago and despite the apparent simplicity, it is a good solution. 4 attachment points (2 straps) is enough for most cosplay projects, but if your mask weighs more than 600-700 grams, I advise you to use an additional 5 attachment point.
If you want to be able to adjust the tension of the straps, I suggest using buckles with two slots (also 30mm).
Also, pay attention to the width of the rub