Product details of 8 PCS Erasable Neon Color Fluorescent Liquid Chalk Marker Highlighter Ink Pen for Window Menu LED Writing Board Assorted Color Round HeadKit includes 8 vibrant colors to create a shimmery effect that will make art projects extra special Widely used on a wide range of surfaces: mirrors, windows, chalkboards, plastic and more Water based, non-toxic, odor free and hypoallergenic Erasable, easy to remove from non-porous surfaces Use with fluorescent writing board(not included) to make your advertisement more attractive at night! Use Method and Tips: 1. For first time use, give the pen a shake and press the tip down for several seconds 2. Once the liquid chalk starts coming out you're ready to start writing 3. It is better to use on the power-on writing board, and do not touch the board to avoid leaving the fingerprints 4. If the ink turns dry, pull out the pen tip, wash it with clean water and dry it, then put it back to reuse Remove Method: 1. Small area: use dry cloth or paper tissue, it is easier to clean when it is dry 2. Big area: first, clean it with the moist cloth, then use dry cloth or paper tissue to clean it regularly 3. Repeat if it is not completely clean Material: plastic shell Size: 1.6 x 14.1cm (D x L) Tip Length: 6mm Color: assorted color Style: round head Package: 8 x Liquid Chalk Marker