Westside says this about the Fortress: The Fortress is a combination of speed, control, and stability. It is designed to be the workhorse for long fairway drives, hyzers, and even flex shots. It is guaranteed that wind will not conquer your fortress.
About VIP Plastic
Super-durable hi-tech plastic with excellent performance. VIP plastic is transparent so you can see through it. Discs made in VIP-plastic maintain their flight characteristics and reliability for a long time. This plastic is suitable to both recreational players and pro players.