【Magic Markers】Glitter pens has a unique automatic double line function. ①When writing on light and white paper, it can draw double lines at the same time, shimmering silver with a coloured border ②When painting on dark/black paper, only metallic silver is shown ③When painting on smooth surfaces, only colours are shown. 【Easy to use】First shake the art pens well to mix the ink with the nib. Then remove the cap and gently press the nib against the surface a few times so that the ink starts to flow. For best results, recap the pen immediately after use and store horizontally to avoid ink drying out. It is recommended to write on 80gsm or above paper, otherwise there will be slight penetration. 【12 Bright Colours】Metallic pens contains 12 different colours of shimmering ink with bright, shimmering shimmering colours. Each colour has shimmering ink that will add vibrant colours and dazzling shine to your artwork. Suitable for almost any surface, such as metal, pottery, wood, rubber, glass, plastic, stone and more. 【Great Gift】Glitter highlighters is perfect for art, school, colouring, stamping, gift cards, greeting cards, Christmas cards, DIY craft projects, personalised posters, paintings, photo albums and more. Great for Christmas, Birthday, Mother's Day, Valentine's Day, Thanksgiving, Party, New Year's Day, New Year's Day, Children's Day, Easter, Thanksgiving and Halloween! 【Smooth & Safe】The colour pens specially designed wear-resistant, pressure-resistant nibs help to easily achieve smooth, smooth and clear writing, the set of pigment inks are waterproof, chemically stable, UV-resistant, fast-drying, non-toxic, odourless, fade-resistant, and environmentally friendly.