The Sentinel MF is unique among midrange discs. Its rare combination of speed and fade make 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. The Quantum line offers our most durable plastic. It provides excellent durability for a long life of reliable performance. Quantum plastic offers a smooth and solid feel in your hand with a translucent appearance. The disc pictured is only a representation of the model.