Oakleaf, Lisa,
Sorry, I don't have the model of the one I have, but it looks like the Cocoon Due Short I see here on TE. I bought them when Agoura Cycles was going out of business () and they only had the one pair. They are awesome shorts.

The other Castelli ones I have seen at the LBS here were thicker, but not crazy thick like the Pearl Isumis. However none are as nice as the real chamois ones I used to have 20 years ago but they were a pain to maintain compared to the synthetics.