The bristles on this are very bearable. They are not silicone-soft (i think silicone won't last being rubbed against). But they are flexible plastic. Maybe slightly harsher than a human hair brush, but much softer than a human plastic hair comb.
The double sided pieces supplied for attachment are of a typical quality. I used them for a corner install, cats attacked the thing violently trying to get to catnip, and it didn't fall off.
Very happy with this.
I just received my order and the cat is delighted! Thank you very much for the excellent service and quality.
Wow! I love this product. My order arrived today and I'm very impressed with the quality. I'm quite sure that my cat will love it!