COLOR-CHANGING GLITTER INK - The advanced glitter technology shifts hues based on the ink color, showcasing a stunning chameleon effect when exposed to sunlight 18 GLITTER COLORS- This set features 18 colors, each infused with glittering pigments that add a mesmerizing sparkle to every painting. Whether you're creating intricate designs or bold strokes, these pens elevate your artwork with their radiant effects. Your work comes to life with each brushstroke, shimmering and standing out with unparalleled brilliance. SMOOTH WRITING - We focus on precision for a smooth experience. Unlike other gel pen brands, our focus is on quality and experience. No sputtering ink or skipped lines. Our smooth, fine-point rollerball nib will glide over the pages effortlessly for a perfect finish. VERSATILE APPLICATIONS - Let your imagination soar and the uses are endless. use gel pens for coloring books, scrapbooking, school and home projects, greeting cards, letters, or just doodling.