I'm 5'6 156lb and I ordered a medium. I didn't think anything was wrong with it until I tried it on. The body suit was too short in the back and the zipper came broken. That wasn't really a big issue because I could fix it. My biggest issue is the boot cover on the right was too small. The right and left leg didn't MATCH! O_o It actually seems like they sewed on a leg for a small sized suit instead of a medium. The glove are not like the ones in the picture and do not come up that high. The head piece is a joke. The costume is all around made wrong. I wouldn't be surprised if this ended up in the Dollar Tree next year. If I didn't need this because it's so close to Halloween I would want my money back!