Hot answers tagged saddle
Definitely alloy drink can or other thin sheet metal as it is not compressible and is not affected by water, oil or grease.
Old thread.. But here's how I fixed it on my bike... Cut an old inner tube into strips that wrap around the rails. Wrap them around the rails and tighten down. It should last virtually forever this way and won't damage the rails like sandpaper will. It might also slightly lower vibrations in your seat.
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