You can use it to do a lot of things 

1. The things you want to plug in slaves mouth, then wear a mask, so simply spit it out, then took out to the streets, others can not see. 

2 while with several layers of gauze masks, so that will be very difficult to breathe, is a good tool to play suffocation. 

16 layers thick gauze grace mask (ear hook lacing style, just the factory) 

Single individually wrapped with certificate. 

Size: 15CM * 20CM * 16 layers / month