That is Asian measurement 1cm=0.39inch 1inch=2.54cm Dimension(cm): S: Bust 100 cm Size 64 cm M: Bust 104 cm Size 66 cm L: Bust 108 cm Size 68 cm XL: Bust 112 cm Size 69 cm XXL: Bust 116 cm Size 70 cm XXXL: Bust 120 cm Size 71 cm with the distinctionwithin the measurement methodology, please enable 1-2cm in measurement deviation.