Yvette Costeau, PVC-facesitting and -riding

Re-edited old clip:

Yvette wears PVC trousers and sits on her slave's face. The slave is on a high bench, so Yvette can sit on him like on a saddle, all her weight pressing on his face.

In the first part, she sits foreward, then she turns around and sits reverse. Her round ass in plastic seals the air-supply properly.