The shooting is clearly amateur, the lady doesn't want to advertise herself and is wearing huge glasses all the time. Is she skinny? I would rather say she is athletic with a very nice figure. It's a pity they fuck in such unsanitary conditions. If they would have taken a hotel room, they could have made a more interesting video.
To meet three hot girls in one pool is great luck! Each of them wants to look like the best female. And to draw conclusions, you have to fuck them all. It seems the lucky guy has been in a fairy tale!