When choosing a martial arts uniform, it is most important to choose the size which fits your height best. The second thing to consider is your waist size, followed by your weight. The reason for this is the wide variety of heights, shapes, and sizes which influence how a uniform fits. Height is the most consistent measure of how a uniform will fit. Exceptions to this exist however. A 5'3" body builder may require a size four or five uniform if their chest and shoulders are too large for a size three uniform. If your uniform does not fit you properly, you may exchange it for a larger or smaller size so long as it falls within the requirements listed in our Exchange Policy. Please take into consideration that all 100% cotton clothing and uniforms will shrink between one and three inches overall after being washed for the first time.