From Urban Decay's Site:
In answer to requests from our beloved fans and makeup artists, we have created Eyeshadow Primer Potion in a Professional Size tube -- 150% MORE POTION than our original bottle!
It’s our same amazing formula, packaged in a quick and convenient squeeze tube. For artists, this means faster and more hygienic makeovers (no more wand to dip). For you at home, it means you can squeeze out every last drop of primer… and you get TONS more of it! The needle-nose tip keeps allows you to squeeze out just the right amount, every time.