It's a fully 105-equipped bike, with carbon fiber seat and chain-stays, seat post, and steerer. I have a Specialized Lithia 105 seat on it and a lovely wingbar. I had actually wanted a Roubaix, and we were supposed to get one, but the store had unknowingly sold it before they told us about it. However, the shop is new and wanted some return business, so they sold the Orbea to me for $1100. It's pretty ridiculous. I had not even looked at the Orbeas because they were so expensive. However, I now have the most beautiful bike I have ever owned. I rode it a few days after I got it, and it rides like a dream. I'm in love...