2020 Classic Motorcycle Pants Men Moto Jeans Protective Gear Riding Touring Motorbike Trousers Motocross Pants
This is the EU size, if you want the JP size, please buy the small one

S size :  1.68m--1.74m

        59KG--66KG

M size:  1.70M--1.78M

        68KG--80KG

L size:   1.76M--1.83M             

         80KG--90KG

XL size:  1.80M--1.85M

        85KG--95KG

XXL size:  1.82M--1.90M

        100KG-108KG

XXXL size: 1.83M--1.90M

         110KG

 

​   (Then refer to waist circumference to choose a size)