Discmania says this about the Maestro: The Maestro (formerly the Spring Ox) is a low profile midrange with a bead that helps flight as well as making sure the disc releases smooth from the hand every time. This midrange has a straight flight with a slight slow speed fade making accurate approach shots a regular part of your game. While most midranges have a larger diameter, the Maestro features the same diameter as drivers and putters making this disc fit more comfortably in the hand.
About Active Line Plastic
The Active baseline plastic is the perfect balance between keeping the disc firm as well as soft to the touch meaning the disc always feels comfortable and natural in the hand.