Our aprons have been designed to accommodate a good many proportions.This is not to say all, as the body comes in many glorious shapes and sizes.  The Small/Medium works great for most folks who are 5 ft – 5 ft 7 inches tall and the Large/Extra Large works great for those taller, up to about 6.5 ft.  If you think you might fall below or above, please send us an email and we will happily let you know if different sizes will be available in the future.