Pet Age Stockroom New Products has a concise mention of Wham-O Pets Frisbee Discs.
This nine-inch soft rubber disc features raised Bone-Tec patterning, which adds dimensionality to a product and provides tooth grip and chew feel. It’s made from a new design of heavier rubber, which makes it extremely durable. The rubber construction makes it easy for dogs to catch.
Also in the Pet Age Magazine’s March 2015 print edition (page 54).