The Yeti Pro Aviar is a Big Bead Aviar in a Grippy Plastic that was designed for the 5x Putting Champion Jay Reading and what he wanted in a putter. It has a Concave top (puddle top) and is not as stable as a KC Pro Aviar.
The Aviar Driver is made from the "Big Bead" driver mold. This is the same mold used for the KC, JK & Yeti Aviar. The "Big Bead" is named due to the noticeable bead along the bottom of the rim of the disc that is responsible for creating a more overstable flight path.
Pro plastic is manufactured using a special blend of plastics designed to provide unique qualities for each model. These quality discs offer increased durability over the DX plastic and provide an enhanced grip when compared to the Champion plastic. Pro discs provide additional glide when compared to all other disc lines and are more affordable than Innova's premium Champion or Star Line discs.