Sakura Pigma Micron Permanent Pens

Will not feather or bleed through even the thinnest papers and is smear-proof once it has dried. An excellent fabric design tool. When used on natural, untreated, 100% cotton fabric, the ink is permanent and washable. Fade proof against sunlight or UV light. Will not clog or dry out like most mechanical pens. Waterproof and nontoxic. Nonrefillable. Sizes 0.20 mm, 0.25 mm, 0.30 mm, 0.35 mm, 0.45 mm, 0.50 mm (super fine to medium line).