Originally Posted by
Darth Lefty
Nikwax TX spray is what they sell at REI. It worked for me but I wouldn't be surprised if there's something cheaper out there.
If it lasts longer than a few weeks $15 could be fair to pay. I tried one of the spray on treatments that did not seem to do much of anything after the first couple rides with the jacket in rain. Does it seem to last a reasonable amount of time for you?
Looking at the TX video, I did learn that a dirty jacket could be causing the DWR to not work properly. Going to clean the jacket and hope that helps.