We just got these in at the Bike Touring News Store.
The FiberFix replacement spoke is an aramid cord with a metal “cam” attached. When a spoke breaks the wheel will have a wobble which will probably rub on the bike frame and or the brake pads. If not repaired right away, other spokes may start to go as well. For the mechanically challenged, when a spoke breaks the FIberFix spoke replacement is a good alternative to removing wheels, tires and possibly cassettes. Just thread the included attachment piece into the remaining spoke nipple on the rim, thread the cord down to the hub and back up to the piece threaded into the nipple and tighten.
Here are some reviews at crazyguyonabike.
Might want to bring two!