Size s, 28# waist circumference 7 1cm

Size m, 30# waist 76 cm.

L code, 32# waist circumference 8 1cm

Plus size, 34# waist 86 cm

XXL size, 36# waist 9 1cm

The most important thing is waistline.

Men's trousers: waist +7= size

Pants: waist circumference +6= size

For example, if you are a boy with a waist circumference of 2 feet 6 and the size is 26+7=33, then you should buy a size 33.

In addition, the slim pants will be one size smaller. If you don't want to wear too tight, you can choose a bigger size.