Secondaire is a lightweight 20mm wide 25KN strong polyester webbing designed to be a highline backup or low stretch longlines.  Made in the US.

Quick Specs

Material:      Polyester
Working Load Limit (WLL):      8.3 KN (1,873 lbf)
Minimum Breaking Strength (MBS):      25 kN (5,620 lbf)
Weight:      44 g/m 
Stretch:      3.37% at 6 kN