Peer Reviews
Types of Blood Fineliner Pens (Pack of 6)
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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 fineliner 6-pack.
.4 mm tips
Each pack contains 6 unique colors:
Hemoglobin
Hemocyanin
Chlorocruorin
Hemerythrin
Vanabin
Biliverdin
100% Recycled Ocean-Bound Plastic
Carbon Neutral Shipping & Operations
Compostable Packaging
These pen packs celebrate the colors of our planet, our bodies, chemistry, and natural science. Each set is a unique palette built to to inspire beautiful note-taking and elegant journaling.
| Ink Type | Water-based ink |
| Pen Type | Fineliner |
| Tip Size | .4 mm |
| Material | 100% Recycled Plastic |
| Pack Size | Each pack contains 6 pens |
| Origin | Designed in Oregon Imported |
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Frequently Asked Questions
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