Sandra T.wrote a review of ISM PN 1.1 Saddle on December 4, 2017
Familiarity: I've put it through the wringer
Tried this after reading and watching videos about it, in my lengthy quest to find a reasonably comfortable saddle. This one does do what it's designed to do - instantly relieves pressure on soft tissues which aren't meant to bear weight. I expected a week or so of the kind of sit bone pain experienced during the first days of one's first road bike saddle, but that wasn't the problem. It significantly affected tendons connecting the innermost leg to the body, and the muscles supporting the soft tissues. I tried every saddle position and was still left with inflammation and bruising. It was the same for my husband. I suspect our problem was due to narrowly spaced sit bones. If yours are normal or wide, you should try this saddle. Keep in mind that body weight or aesthetic perceptions of body shape don't determine sit bone spacing. There are skinny, hipless pros with normal sit bone spacing. Also keep in mind that your seatpost setback is relevant to fore/aft positioning; the recommended 3" back was too far for my 35mm setback. And definitely lower the saddle per recommendation. If you get the positioning right and it fits your bone width, it could solve any saddle comfort issues.