Fit Flight Air Ross Montgomery Signature Dart Flights - ShapeFit Flight Air dart flights are thinner, lighter and more flexible. Fit Flight AIR is approximately 35% thinner and 33% less weight than the original Fit Flight. Even though the Fit Flight AIR has been reduced in thickness, the durability of the flight has been maintained due to its flexibility. Even though the Fit Flight AIR has been reduced in thickness, the durability of the flight has been maintained due to its flexibility. These highly durable