Dear, it is asian size.

3 size smaller than US and European size

S Shoulder 48 cm Bust 98 cm Sleeve 18 cm Length 59 cm

M Shoulder 49.5 cm Bust 102 cm Sleeve 19.5 cm Length 62 cm

L Shoulder 51 cm Bust 106 cm Sleeve 21 cm Length 64 cm

XL Shoulder 52.5 cm Bust 110 cm Sleeve 22.5 cm Length 66 cm

2XL Shoulder 54 cm Bust 114 cm Sleeve 24 cm Length 68 cm

3XL Shoulder 55.5 cm Bust 118 cm Sleeve 25.5 cm Length 70 cm

4XL Shoulder 57 cm Bust 122 cm Sleeve 27 cm Length 72 cm

5XL Shoulder 58 cm Bust 126 cm Sleeve 28 cm Length 74 cm