I get a bit panicky. So he has bought me a sort of training hood: it is just stretch fabric, with an internal blindfold. I can breath through it fine. It is light to wear. It provides me with that extra-sensory deprivation feeling enough to heighten my enjoyment. It puts me in his control and increases my submissiveness. He can see the shape of my face, see the grimaces my mouth is making, so he has some read on my expression. I love it. And I know I will want to move 'up' as it were.

Snowflake's comment about a hood on him - yeah. I havn't encountered that yet but, I think it would add a serious level of... villany to the dom. Scare-factor. I rather like the idea.