Serfas Dual Density Saddle???
 

I posted about the Cannondale 3.0 from 1989 that hasn't been ridden in 11 years as I've been into mountain biking because of where I lived (Connecticut isn't the best for Road bikes). I've replaced Tires, Tubes, brake cable, handlebar tape, adjusted rear derailler (first time I've learned to do it correctly thanks to parktool.com/repair_help ) and added a Cateye Enduro computer.

Tuesday (June 1st) I took it out for a spin. First time I've ridden over 50 miles in 11 years (from Falls church Va to Leesburg Va on the W&OD trail). Everything went great except the gel seat that was such a big deal 15 years ago and looked to be in excellent shape before I left stopped looking so good after about 40 miles when the cover started getting loose and the gel kinda bunched up in the middle and I was sitting on the outer parts of the seat. That was a long 12 miles!!!

Today I got a Serfas Dual Density Seat for $32 and before I use it I was curious of any opinions on this seat. I've saw where someone bought it for $100 in another post. Thanks

i used to have a bike just like yours, but sold it because of back pain. I had gone to using a suspension seatpost and tailbones saddle, and that helped. The cannondale frames are fantastically light, but really harsh. Enjoy the bike.