Find your Wetsuit size using this chart: When sizing a wetsuit, your weight is a more important determinate of size than your height. For example, if you weigh 158lbs and are 5'6", you would be a Unisex Medium, not a Small. The tighter a wetsuit fits, the better the performance will be, but it will be less comfortable intially until the wetsuit has been worn for a season or two. A looser fiting suit will be more comfortable but with reduced performance.