Ruffwear Turnup Rubber Throw Dog Toy - Heliotrope Purple - The Turnup is an interactive toy that's almost round, so it bounces in all directions - ideal for athletic dogs of any size. It is compatible with ball throwers for hours of fetching fun. Easy to throw: Tennis ball size fits in standard-sized ball thrower. Durable rubber: Made from natural, latex rubber - a renewable resource. Durable, chew-resistant.