Premium Synthetic Shaving Brush Knot packed with Extra Dense synthetic hair.
Note: this knot tends to run a little small! (about -0.5 to -1mm)
The SilkSmoke fan is a different animal than the bulb shaped version. The fibers are finer, softer, and the knot has a shorter overall loft than the bulb. The shorter loft makes it the perfect knot for a shallow socket. I set mine with a free loft of 50mm and it's just about perfect from a softness and ease of splay perspective. Great synthetic knot!
The 26mm SilkSmoke fan offers a great combination of qualities. It takes about one use to "break in" the glue bump, after which the knot has a nice ability to splay without being floppy. The tips are pillowy soft and feel great against my face. The backbone is noticeable but not unduly stiff or uncomfortable. And the knot works with both a splay/scrub style and a painting style of applying lather. Great performer and very comfortable in use!