These innovatively designed stabilo neon highlighters feature a unique soft tube design for comfortable use the bright neon ink is water based to prevent drying out and to remain vibrant on the page the chisel tip nib produces a 2 5mm line for neat underlining and bold highlighting this pack contains 4 highlighters in neon yellow orange pink and green innovatively designed stabilo neon highlighters unique soft tube design for comfortable use bright neon water based ink line width 2 5mm co