The new GF System ligature has the quick fit, non-slip properties of other fabric ligatures but the matrial is designed to allow the reed to vibrate freely with less dampening. This means that you will get a more harmoinically rich, clearer and fuller sound with this lig as opposed to the darker, warmer sound of other fabric ligatures.
BSS = Standard
BGG = Gold-Line
All 'System' ligatures are BGG (Gold-Line)