Stability! Make that overstability! 2.6 to be exact! Discraft's most overstable mid-range disc, the Drone, will stand up to the gustiest of headwinds without turning over! This is a favorite among advanced players. Use it for hyzer shots or forehand approaches. The ESP FLX plastic retains its properties better in cold and hot conditions. The FLX also gives a little bit more-this means it conforms a little better to your hand and it reduces ricochets off of obstacles. It's flexible but NOT floppy!