Avenir brand name road encumber center ergonomic cut-out. I'm not sure what model this is, but it was original equipment on a Raleigh Grand Prix. Rails are marked as cr-mo, which I presume indicates they are chromoly steel. Surface is probably a good artificial leather, with suede-like sides that I'm guessing are artificial. I removed it the day I got the bike in favor of a bigger saddle. The previous owner claimed about 50 miles on the bike at the time.