The Champion line is produced with a hi-tech plastic that provides outstanding performance and durability. Champion discs are distinguished by a beautiful clear appearance. Designed for professional players, Champion line discs are usually a little firmer and more stable than the same model in other plastics. Whether used in heavily wooded situations, or on extremely rugged courses, our Champion line plastic will continue to perform predictably and avoid damage better than any other plastic. The XCaliber is for those who have got to have the biggest and the baddest. Extremely fast with glide and stability. This is the one for confident bombs in windy conditions.