Mixing bright color along side the unique properties of gel ink. Pens will not smear, bleed or feather on most paper surfaces. Sets offered in classic, shimmering metallic, glittery stardust or fluorescent moonlight collections. Brilliant colors that ignite darkness. For best results use fluorescent colors on dark paper surfaces. Their fluorescent elements allow them to glow under black light. Note: moonlight ink comes in 2 types (archival & fluorescent). Archival Moonlight colors contain pigment-based ink which is waterproof & fade resistant. Fluorescent Moonlight colors can fade if exposed to direct sunlight & glow under a black light. Set contains: 2 Gold and 2 Silver pens; and 1 of each of the following: Red, Pink, Purple, Emerald, Green, Blue, Sepia, Burgundy, Hunter Green, Blue/Black, Black, Copper.