Swoop

Herman Miller Swoop

Swoop was designed with college students and the way THEY sit in mind. The best way to describe the design is versatile. Traditional furniture encourages a certain posture while Swoop lets you sit the way YOU want, whether that's curling up or sprawling across it. There aren't even any hard edges just gentle swoops.  

https://www.hermanmiller.com/products/seating/lounge-seating/swoop-lounge-furniture/