These eye caps completely blind your S10 gas mask! Nothing can be seen and you have no idea what's going to happen. The fact that you are at the mercy of the dom's whims makes your erotic game super exciting. These eye caps are simply clicked onto the S10 gas mask. As they are slightly elasticated, they stay in place and won't fall off, even if you shake your head. Block out the light completely, it's pitch black, no idea what's going to happen next - really exciting! / Click on and thanks to the slightly elastic material they don't fall off