Made in collaboration with @maytahmi. All our brushes are made from synthetic fibre. The thin bristles allow for precise lines and detailed drawing.. Size S - Small brush, great to create detail with a small dotting tool.. Size M - Medium brush, great to create detailed graphic liners with a medium sized dotting tool.. Size L - Long liner brush, great to create long continuous lines with a large dotting tool.. THIS IS A CRUELTY FREE AND VEGAN PRODUCT!