What is the difference between an Ursack TKO and the current models?
In order to avoid confusion, we have renamed Ursack models by reference to the specific fabric they are made with. The original TKOs were made with a lighter Spectra (Green with white ripstop) and then replaced with heavier Spectra (Green–no ripstop–gusseted bottom)in 2004. That fabric is available again and is now called S29 (Spectra 29 yarns per inch). Our (yellow) Vectran models were called the TKO 2.0; it is now called the V27 (Vectran 27 yarns per inch).
