Despite the diversity of models of bras found on the market, there is still great difficulty in acquiring it with satisfaction, because many do not meet some prerequisites ergonomic, such as quality, functionality and usability, especially for those who use size exceeding 46 . Whereas most women have different body types, it is understandable that many feel unsatisfied with the bras models found in stores. Resulting in feelings of frustration, because most feel excluded from the "standard" model dictated by fashion, to be thin. Therefore, this work aims to detect the biggest complaints that public regarding the options of bras offered, ergonomic criteria to determine which should permeate the new models.Analysis of parameters affecting the purchase of bras sizes exceeding 46.