Types of Blood Gel Pens – 6 Pack
Did you know that not all blood is red? While most vertebrates (like humans) have red blood, octopuses and crustaceans have blue blood, leeches and some segmented worms have light green, lizards have green, some marine worms have violet, and sea cucumbers and some beetles have yellow! Write in the rainbow of blood colors with this gel pen 6-pack.
Each pack contains 6 unique colors:
Hemoglobin
Hemocyanin
Chlorocruorin
Hemerythrin
Vanabin
Biliverdin
Details:
Gel Ink
.7 mm tips
Roller Ball
100% Recycled Ocean-Bound Plastic
Compostable Packaging
By Cognitive Surplus
