The Boss is the first golf disc to earn a speed rating of 13 from Innova, making it the fastest disc on the market as of October 2008. This disc is not only the fastest, but is also the most wind and torque resistant driver made by Innova. Bottom-stamped discs have no stamp whatsoever on the dome - very cool! Innova stamps the bottom of the disc with a unique stamp, giving you a clean looking disc on top. Great for those you love to do home tie-dyes! The STAR plastic Boss is made from Innova's super-durable and easy-to-grip STAR plastic.