Sable Travel Watercolor Brushes, Fuumuui 4pcs Elegant Kolinsky Sable Travel Brushes Travel Watercolor Kit with Leather Pouch Perfect for Watercolor Gouache Ink Painting. High Quality Kolinsky Sable Hair – Bristles are made from High-end natural kolinsky sable hair, which makes these watercolor brushes hold a perfect point, possess plenty of elasticity, have a high capacity for holding color, and feature an expertly shaped tip with snap.