Although this is sold as beard brush it can be used as a wave brush as well, which was my main reason for purchasing.
Bristles: If anyone is familiar with wave brushes this is a bit stiffer than a medium, but softer than a hard. The brush has high quality boar bristles, unlike other brushes where there is a mix of boar and plastic. Has great pull on the hair and bristles don't scratch my head or face.
Usability: You may not be able to tell from the pictures, but it has a crescent shape, which is great for getting more of the brush to contact with your head and face. Same size of a regular wave brush, which is great as it helps define the wave patterns and requires less strokes. It also does a great job with directing my beard.
Overall this is an awesome brush that can be used on the hair on top of your head and face. Great design, branding, packaging and wood. A few loose bristles may fall out after the first couple of days, but this is normal when compared to other brushes I've used.