They designed the tube with such a huge on/off button that it takes away 2cm space, totally unnecessary and wrong design choice, and now only way to fit it in this bag is to remove one side of the soft filling. Otherwise tubes will turn themselves on/off all the time because the button is almost like touch sensitive, but at the same time it's huge and mechanical. I would really like to know who designed it. How this design passed the inspection, testing. Mystery. Positive about this bag, it's light, very fragile but really light. Anyone carrying Astera tubes 8x case knows what I'm talking about. Not yet sure if 6x charges will fit, if they don't I'll update my review.