Mark Zuckerberg spent Tuesday afternoon being grilled by senators from the comfort of a black leather arm chair topped up with an extra inches-thick black cushion.

The cushion-y boost under the 5'7 social media pioneer was nearly invisible, thanks to the color camouflaging.

He sat on a dark wood and black leather armchair with brass nail head detailing - topped up with his very own inches-thick firm cushion which was fitted to the shape of the chair.

Mark Zuckerberg sat on a little something extra as she testified a Senate committee on Tuesday

He sat on a dark wood and black leather armchair with brass nail head detailing - topped up with his very own inches-thick firm cushion

The cushion appeared to be four to five inches thick and fit the shape of the chair, hooking out over the arms. It barely compressed under the billionaire's frame

The trim billionaire sat tall as he testified while wearing a gray suit

The billionaire testified before the Senate Commerce, Science and Transportation Committee and the Senate Judiciary Committee joint hearing on 'Facebook, Social Media Privacy, and the Use and Abuse of Data' on Capitol Hill.

Zuckerberg is in a high-stakes televised grilling from lawmakers Tuesday and Wednesday about the use of Facebook data to target American voters in the 2016 election.

Zuckerberg tried to reassure lawmakers, saying Facebook would investigate 'every single app that had access to a large amount of information' on the site.