They work.

Great product. Slim and effective as a hair brush and great with Bernard’s. forget other type of expensive brushes. Fits into your back pocket easy to carry

Slightly larger than most palm brushes.

Overall this brush is pleasant for the head, has longer pins then the standard (smaller brush) and I enjoy using it.
But:
a) It is larger then the smaller type (that normally you can get at any barber shop) and can fit only in pocket of big large people.
I wish the seller would have both types on the product page.
b) The handle's rims are sharp complicating the process of placing the comb on your hand.

great product, actually better than I anticipated. I have several of these combs from other manufacturers and would've been satisfied with similar quality, but these are better :)