I got this gel bike seat cover to replace my ugly, old, uncomfortable one on my favorite bike. The cover fits easily over the top and tightens down around the seat with a locking drawstring. It's pretty dang comfortable and after a long sweaty ride, you can take it off and hand wash it, let it dry and you are good to go the next time.
Definitely saves my butt. Make sure you tighten it down as hard as you can so it doesn't wiggle around.
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