Originally posted by es_seattle
I used it for the first time on the STP this year, and I think it really helped. It did feel a little uncomfortable until it warmed up, though!
I take it you tried that sample tube that came with your STP packet. Mine's still in a pocket in my gear bag. I still have the tube, I looked at it skeptically when I opened the packet. I might give it a try on my next ride (Trek Tri-Island)