NOTICE!!! --- Since the product is a water-based acrylic pen, to ensure the fluidity of the ink, so the product ink does not fill the entire barrel!! The ink needs to be fully shaken before use,The paint markers need to shake first ,then press tip on scratch paper to test ink before use,start your painting directly after Ink covers the nib.Cover the cap after useor the tip will dry out and stuck if you didn,t put on the cap. Premium Paint Marker --- High quality certificated ink, non-toxic, without strong smell, safe and suitable for all ages, The ink flows smoothly,fast drying, colors do not bleed and are waterproof. 2mm medium nibs provide great coverage for projects. These inks keep the colors of your artwork vibrant long after the art is finished, and it's time to just express your imagination! 12/18/24 Vibrant Colors --- 2 mm nib acrylic markers pens allows you to draw lines or fill in large areas to your creation. The acrylic pens are rich and vivid, with strong covering power. After the color dries, it can cover the original base color again, with high color reproduction. The product uses high-quality water-based ink, waterproof and sun-proof, lasting bright and not easy to fade. Multi-Purpose --- Enjoy creating art projects on a variety of surfaces, acrylic paint set suitable for rock painting, ceramic and mug painting, glass and wine glass painting, wood, fabric, stone, metal, plastic, canvas, Christmas ornament, custom mugs, and much more for both smooth and porous surfaces.It can be endlessly enjoyable.