Diana has on those mirror thigh high boots while Jane is wearing some black shiny thigh high boots. They cross their legs into one another to create boot pretzels with their legs and the squeaking, creaking and cracking of their boots is almost non-stop through this entire video.
Some dancing, ass-shaking, leg and boot rubbing as well.

See the clip here: https://www.clips4sale.com/studio/44139/24867763/dirty-diana-jane-domino-leg-pretzels-squeaking