So before I had which made of glass, which are to me but either eventually broken broken when screwing or fell down times, which is also fatal to the. This will last longer been a while, but I also previously fallen down not xD Visually it looks good and you can still see the level anyway. However, it looks as if inside the "ceiling" is run down. I do not know if this is normal or if the beginning was, but it looks a bit odd, because there are small indentations where liquid accumulates when the e-cigarette is time.