Wayne: "The WB Flugel Deep has 10% more cup volume and matched backbore to help create a covered, fluffy sound. This is a great choice for small group playing and for an intimate sound."

Specs:
Backbore: GR Flugel
Cup Volume: 0.1131 Cubic Inches (Very Large for Diameter)
Cup Diameter: .631 Inch
Contour: Semi Flat-Wide
Bite: Soft
Alpha Angle: Medium