I wear a 42" waist, and can often be disappointed with pants that claim to be designed for me. These have an excellent expandable waistband, but don't have the drawback that many do, where the gap inside the pocket can be seen by someone standing to your side (often displaying your underwear to casual observers). As for comfort, these are an excellent and breathable material with a good heft to it. I feel comfortable sitting, and was able to do a few basic stretches in them without any pinching or tightness.