Sarasa Clip Gel Retractable Pens feature water-based pigment ink that is acid-free, archival quality and water-resistant. The .5mm nib pens feature a push clip that attaches easily to thick pockets and book covers.The 20-Color Set contains one each of black, blue, red, blue black, cobalt, pale blue, light blue, blue green, viridian, green, light green, red orange, orange, yellow, light pink, pink, magenta, purple, brown and gray.Sarasa Milk Gel Pens feature softly colored, opaque inks that show up well on light and dark colored papers, including glossy photos.The 8-Color Set contains one each of milk blue, red, green, pink, purple, orange, white and blue green.Sarasa Decoshine Gel Pens feature shimmering ink that adds the perfect glitz to artwork or everyday writing. The ink dries quickly for clean precise lines that show up on light or dark surfaces.The 9-Color Set