Convertible eye color is a slim pen with a powder shadow on one end and a matching eyeliner on the other. I bought this shadow/liner duo in violet. THe packaging is cute and the quality is great, but i took points off for the steep price and the fact that that the 'convenient' powder shadow tip can actually be a pain because it is hard to control the amount of shadow you apply onto your lids. The liner is great because sharpening is not needed, even though the color is more brown than violet. A smudge tip is included which is great for achieving that smokey, sexy eye look.