Not all markers are the same. Broadly speaking there are five different types of markers: Regular washable, Ultra-washable, Not specified, Permanent, and Special markers (like glitter or metallic).
Color Swell sells bulk markers that have a long lifespan, but did you know you can prolong their lifespan even more with a little extra care? With these simple "tips" (pun intended) you should maximize the time between orders and minimize your outlay on art supplies.