I'm 5'10" (177 cm) tall, around 155 lbs (70 kg), and have an athletic build. I normally wear 30x32 or 31x32. The 30x32 "Slim Straight" pants I ordered fit perfectly!! Last time I bought Bonobos work pants, "Slim Fit" didn't exist, and I thought that the legs were too baggy. The butt area looked awesome, but the leg opening was too wide. Not anymore! What a difference 3 years has made. If you're not familiar with these Bonobos pants, someone should probably inform you that while you never need to iron them, they do have a bit of a sheen. They don't have a matte finish. This sheen is a lot more noticeable in these light-coloured pants than on the Monday Blues or Thursday Browns that I also purchased, especially in strong sunlight. Still, they look fantastic, and I'd buy them again!! It's so nice to not wear boring navy or grey all the time.