I have a saddle sore :(

[BC2COCyclist]

I just wore tights without underwear. They are MEC tights incidentally - not expensive.

My new steed has a Bontrager Affinity meant for chicks.:/

[kmehrzad]

Years ago a new bike saddle was giving me saddle sores. I corrected the problem by going to a more narrow saddle. That took care of the issue for me.

[BC2COCyclist]

Interesting...

[Owlie]

It may be "designed for women", but if it doesn't work for you, that means nothing. I got sores in that area from a saddle that was the wrong shape--good width, but too gradual a transition between the nose and the back. I still get them from a narrower, better-shaped saddle, but not nearly as often, and only with one pair of shorts. (Check the saddle threads for more.)

As for shorts: Check the for-sale section here on a regular basis, and Performance or Nashbar.

[ny biker]

I just use soap and water for saddle sores. I don't have many problems with them. Make sure you change into clean dry clothes as soon as possible after a ride.

The affinity is pretty t-shaped, but it comes in 3 different widths so it might be the wrong size.

[BC2COCyclist]

the one that came with my Trek Madone WSD 3.1..it says "U22" underneath.

I have never measured my sitbones, nope. I have ridden my 20 year old unisex MTB all over the place and never had this issue. :/

[Biciclista]

can you try your other saddle on this bike?

[ny biker]

I think the stock saddle is 144 mm, but I could be wrong.

Since the shop where you bought the bike is a Trek dealer, they will have a measuring device that you can sit on to find out if the saddle you have is the correct width.

What saddle is on the MTB?