These brushes are made from mongoose hair, which has a wonderful spring to it, while the hairs are soft. They hold a nice tight chisel edge that is great for painting with crisp detail. They are terrific for blending, underpainting and glazing. They cost a bit more than the synthetic brushes, but they last longer and perform better. And for a natural hair brush, they are priced very well. 1 each of sizes 8, 10, and 12