GoLite SmartFit Sleeping Bags Sizing Charts:

GoLite Bags SmartFit Explained

GoLite SmartFit allows you to select your sleeping bag shape and size based on your body type and preferences. GoLite has designed a bag series that can accommodate a wide range of heights and girths as well as a person's preferences in terms of roominess and comfort inside the bag. Three bag lengths and three bag widths are available -- for a total of nine sizes! -- and SmartFit bag shapes were designed to optimize fit dimensions for each size category, baffle by baffle, so you can pick the bag that's right for YOU.

So, if you've ever been too cramped in a bag, or been cold from too much wasted space, SmartFit is the answer.