Have had the GIVI 3D600 (TPH02) since I got the bike, and it is a fantastic bag. I really like the pre-formed 3D shape of the bag, but even though it was a nice compact size, sometimes I need more than the 4 Litres it provided.
This is why I got the GIVI 3D604, similar shape but at 15 Litres I can carry a bit more, without it being way too big.
Had a chance to use it today and it is really good. Doesn’t interfere with handlebars or instruments
Here it is compared to the 3D600: