Having a folding comb made of a good materials was a pretty exciting proposition for me.

For reference, I have a full beard, about 4 inches long, and have used many beard products and combs over the years. My day to day is carry a carbon fiber full comb in my pocket

The comb appears to be made of good materials and is not saw cut, which are prerequisites for a good beard comb. It is small and foldable as advertised.

It's a microscopic thin cut between the tines, which makes it excellent for mustaches.

However, that thinness makes it terrible for beards; it often gets stuck, isn't deep enough to handle tangles, and is ultimately unusable if have anything more than 0.5 inches of facial fur.