It's Huge!
I grew up near the Kent factory so have always used their hair brushes and badger shaving brushes. A few years ago I switched to synthetic with the BK8S which is great for soaps and creams, but doesn't produce enough lather with hard soaps. I've tried other brands of synthetic and boar brushes for this, but was never totally happy with them so decided to go for the BK12S. I remember the badger version of this which was gigantic but not very practical. The synthetic version isn't so big, but is still huge and dwarfs the BK8S in every aspect. Until now my largest brush had a 28mm knot and I'm surprised at how much difference an extra 2mm makes. I used it today with Kent hard soap and it absorbs so much water that it needs four or five flicks to get the right consistency. Lathering is simple, it quickly builds to a good level which can be easily applied to the face and feels really good. It also didn't need to be reloaded and will hold enough soap for two or three passes. Overall I'm really pleased, it will take time to adjust to the bulk of it, but I'm already looking forward to my next shave!