Opti Lashing is a thin, 0.9 mm diameter line, with a low stretch, low creep SK78 Dyneema core and a polyester cover.
This line has a "grippy" cover and ties extremely well. It is used for Optimist sail ties.
Opti Dinghy Lashing replaces 2 mm Vectran sail ties.
It is also popular as a whipping line for applications where the strength of the Dyneema core is needed.