It's October- which means zombies, Halloween and Supernatural. Okay, Supernatural has absolutely nothing to do with this knotwork, but I'm really, really excited about it.
I hope you enjoy this knot to color as much as I enjoyed drawing it. It's a biohazard symbol, which are frequently used in pop culture zombie movies and merchandise.
Click the images below for larger version to print and color.
Large transparent PNG:
Looking for some great zombie themed gifts?