How masked mistress teaches her submissive to pleasure herself with the gas mask

In this steamy video a masked mistress is waiting to teach her submissive slave how to self pleasure using a gas mask. Her gas mask makes it so that her pleasure is intensified, keeping her slave moaning and writheing in sheer ecstasy. BDSM has elements in the scene as mistress takes hold of his submissive slave and offers them to realize what has been their domination dreams.