Tri Blend True Blue Markers by Spectrum Noir from Crafter's Companion! This pen contains three ready-to-blend colors in vivid blue shades that are alcohol pens for seamless coloring! Inside each marker, there are three separate ink chambers, each feeding through to a fine-bullet nib, so you can experience three colors inside a single alcohol marker for the first time. Because they're transparent alcohol-based inks, it's easy to blend from lights to darks without overlap marks and the pens are refillable.
More Tri Blend from Crafter's Companion: Light Green (
link), Purple (
link), Ice Grey (
link), Light Yellow (
link), Tan (
link), Jade Green (
link) and Orange (
link).