This is an underrated mid from Millennium. In Sirius plastic (compare to Innova Star plastic), it is durable yet grippy. The flight path that the Sentinel will want to follow is a hyzer line but can be utilized in various situations.
Millennium says: The Sentinel MF is unique among midrange discs. Its rare combination of speed and fade makes it perfect for the following situations: low ceiling fairway drives, against-the-wind approaches, skip/fade up-shots, and “reverse S” approaches.
When you get in a tight situation, sometimes you need that special disc to save the day. That’s when the Sentinel MF shines.