Le Pens feature a smooth writing .3mm micro-fine tip, non-toxic, acid-free ink and a sleek barrel design.The 10-Pen Assorted Colors Set includes two each of black and blue, one each of red, green, pink, burgundy, lavender and teal.The 10-Pen Dark Colors Set includes black, red, blue, green, brown, lavender, olive green, dark gray, burgundy and Oriental blue.The 10-Pen Bright Colors Set includes blue, orange, lavender, pink, light blue, light green, teal, orchid, periwinkle and amethyst.The 10-Pen Neon Colors Set includes fluorescent blue, fluorescent green, fluorescent yellow, fluorescent orange, fluorescent violet, fluorescent pink, black, blue, red and green.The 6-Pen Pastel Colors Set includes pastel coral pink, pastel blue, pastel peach, pastel peppermint, pastel wisteria and pastel yellowThe 6-Pen Retro Colors Set includes magenta, navy, sepia, pale mauve, musta