So I got this 84 fuji del rey and it has one of those saddles where you can take the cover off and replace the padding inside. I wanna know where or how I can get some quality foaming . Any suggestions???

Thanks

1-Local fabric shop, not sure of the quality or price, as far as bike applications, likely cheap.
2-Walmart craft/sewing section.
3-Auto/home upholstery shop.

Good luck.

Scraps of carpet padding? They have different densities and thicknesses.

Auto upholstery shop should have a variety of types to chose from - might even have a scrap that is just right.

ethafoam is nice and dense, look it up online

My old Troxel style saddle was stuffed with horse hair.