In response to the comment "dalila": please do not believe it takes systhématiquement take one size above your: it would be a mistake because this model size "normal". Then, to choose its size, to consider the "height", if you are between 2 sizes and great: take the larger of the two sizes, but on the contrary, if you are very petite, must choose the smaller of the 2. It should also take into account the desired size cap. In short: if you have a doubt do not hesitate to contact the seller to him, knows his articles and can advise you.