The Fendi FS 384 is the bigger sister of the FS 383, whereas the FS 383 is a bit smaller and has a more straight design, the FS 384 is a more oversized pair with a wraparound fit.
The unique style attributes that we can find in its smaller sister are also there for the 384.. The earstems are connected to the the frame with a buckle, at least it looks like that. A very creative way to give a pair of sunglasses a unique and outstanding look without making them too loud.
The Fendi logo has been nicely integrated into the "Buckle".