The shape of the bristles is very similar to MAC 239. Function-wise, it is mainly used for laying down colors and it deposits the same amount of pigment as the MAC. Needless to say, it feels 1000 times softer and silkier than MAC. What I love about this brush is that it is very flat if you look at it from the side, which is perfect for smudging a soft (or smoky) line along the lower lash line which is what I have been using it for lately. Compared to a normal pencil brush, it distributes the pigments much more evenly, feels smoother and takes about 2 seconds to do one eye. In short I love this brush!