The posture of the Willow

The woman assoie on her knelt partner, the bust in driving position. The man penetrates it then rocks forwards by supporting with a hand the buttocks and other the back of his partner. The woman can be pressed on a hand to make undulate her basin vertically.

More

A good transitory position to pass from a sitting position to a position laid down without stopping the penetration.
Less

Athletic position to recommend only to the muscular men, or having rather light partners.