I tried out this suit from Express that consists of elastic waist pants with a drawstring. Ya. It was so stretchy and comfortable I felt like I could climb a mountain in it. I also think it looked like a normal suit, like, it didn’t look like sweatpants or something. I think it’s perfect for casual suiting like with this henley, or even something with a shirt tucked in. Though I’d probably get rid of the drawstring since they were kinda pointless. The elastic worked just fine.