The acrylic paint marker pens water based with smooth flow, 
Non-toxic and Non Odor, fast-drying, weather resistant, high 
quality certificated ink, environmental friendly.
Great for indoor and outdoor use.

Multi-purpose. Create art projects on almost any surface with acrylic pens for
 rock painting, stone, ceramic, glass, wood, fabric, canvas, mug, plastic,
 textiles, metal and more. Resistant to water, fading and abrasion.

How to use:
1. Shake the barrel before use to make the ink even.
2. Press tip gently, don't push too much to prevent the ink spillage.
3. Start writing when ink flown to the tip

2-3mm tip, excellent designed with optimal pump-valve system which provides
 an accurate flow control, and the clear barrel shows you the ink remaining 
in time, let you and your family easily draw your favorite line.