Sit bone pain

[ny biker]

I have the Affinity RXL and the only problem I've found with the carbon rails is that they are too big for the attachment mechanisms on quick-release seat bags.

I also tried the Affinity R and RL but both were too padded in the nose. I think the RXL could stand a bit more cushioning under the sit bones but the discomfort on long rides is totally bearable and having less padding in the nose is more important for me. It is by far the best saddle I've tried in recent years.

OTOH I gave both the R and RL to a friend and she preferred the R, which is the most padded of the three.

Bontrager offers a 3-day comfort guarantee so the risk of trying their saddles is minimal. An LBS that sells their products would have a measuring tool to help you figure out which width you need.

BTW I found that the Specialized Lithia was extremely painful because my weight was resting right on the edges of the cutout. That could be another possible cause of the OP's problems.

[Owlie]

I looked at the Affinity. It looks pretty good, shapewise. I wish that divot extended further back, though.