Originally Posted by SKUNK Magazine
The Gravity Vortex
Often referred to as simply the Vortex, the Gravity Vortex is about the best thing to happen to the frat party since the invention of the hairy buffalo. What it lacks in refinement, because it's not made of glass, it makes up for in spades in durability and portability. Made of super-strong poly carbonate (no mere plastic - this is the stuff from which Nalgene water bottle are made), the Vortex can withstand tremendous pressure without breaking. Although not recommended, you could throw it across a concrete parking lot or drop it from a window without doing much damage.
Like the Gravitron, the Vortex is available in two different sizes and a variety of colors. The large unit is available in blue and green, the small in pink. At about $90, the California-made Vortex is a value based on simply its durability and longevity.
One of the most common questions asked of Davyd Field, inventor of Gravity Vortex and owner of the company is, 'Can you make these out of glass?'
"Of course I could. But if I made it out of glass, it would sell for $500," said Field. "I view this as the ultimate dorm room piece," he said.