I am trying to decide on my size. I ordered both the M and the L to try. According to their size guide I am a M except in the waist area. I am a 36 waist. The length I am within. When I wear the M it hugs my sweatshirt and I would say is slightly tight when I sit. The large I kind of feel like I am swimming in and I need to bring up the legs a few inches but feel slightly better when I sit. I wear M in everything I just don’t want to feel too bulky. I am 5’8” 170 lbs