The tag is Japan size.
Please check the following Japan size to US size conversion chart.
Waist: 65 cm, Hip: 105 cm, Front rize: 30.3 cm, Inseam: 69 cm
US XS (JP S)
Waist: 70 cm, Hip: 110 cm, Front rize: 31.3 cm, Inseam: 70 cm
US S (JP M)
Waist: 75 cm, Hip: 115 cm, Front rize: 32.3 cm, Inseam: 71 cm
US M (JP L)
Waist: 80 cm, Hip: 120 cm, Front rize: 33.3 cm, Inseam: 71 cm
US L (JP XL)
Waist: 88 cm, Hip: 128 cm, Front rize: 34.3 cm, Inseam: 72 cm
US XL (JP XXL)
Waist: 96 cm, Hip: 136 cm, Front rize: 35.3 cm, Inseam: 73 cm