I have a Body Glove one that is half-sleeved and half-legged. (If that makes any sense.) I got it at ****'s Sporting Goods. (I didn't mean to get edited -- that's the name of the store! .)

That said, when I went looking for a wet suit, I went to a local outdoorsman shop. They had wet suits to rent. I didn't know there was such a thing. They were also good about telling me about fit and the benefits of that and also how to "peel" after you're out of the water.

So, see if there is a shop like that in your area. Then you can get a good idea about brands, styles, fit, etc. and decide from there where to get them. They might even have them available for rent also.