The Prodigy D Model OS disc is the overstable variant in Prodigy’s D Model DuraFlex line. This is a fast and very overstable disc, meant for advanced and intermediate players. It’s big speed means it needs some serious whip to get the best flight path. It is going to be highly resistant to turning over (for a RHBH throw), even for big arms. The disc is very similar to the Prodigy D1, but the D Model OS has more speed and fade. It’s very reliable disc for windy conditions. Great for big skip shots and flying high and carving up the skies to get around obstacles.