These pants are amazingly soft, they really do feel like butter.but I'm normally a medium in pants, small sometimes, but I prefer my comfy pants a bit looser so I can never go wrong with larges. I'm almost 5'8, about 155, athletic build. I bought the black pair and galaxy pair in large. The black pair fits perfect, hugs all the curves. It fits like a small medium, however they reek. Seriously, my entire room stinks now, it smells like a strong chemically, ammonia. Almost like cat pee. It's awfulSee full review