I am around 5,9ft 140-145 and I got a small. I’m usually in between a small and a medium but I stuck with the small and it fit perfectly. If you are tall this will reach your ankles and wrist!! I deducted a star because the neck is super tight when you zip it up but maybe it will loosen up over time

i usually wear a large but i had just enough room to get into this body suit. i will air dry it because i’m sure it would strink in the dryer. it’s not as stretchy as i thought it would be.