Vivitar (formerly known as Ponder & Best) never made anything. They simply stuck their name on things -- a very common practice of distributors, marketers & sellers around the world.
As with most photo gear, polarizers vary in their features. That's what you should look for. Polarizers vary in how thick the rim is (some don't have front filter threads), the type of grip it has for rotating the front (some are rubber, some ribbed metal, some smooth metal), some have index marks (usually white or silver dots), or a pin/tab (for easier rotation).
So don't simply buy because of the brand name -- look at the features (and the price, of course).