1. Chest:

The chest circumference is measured all around at the widest point of the chest area, under the armpits.

2. Waist size:

Waist circumference is a measurement taken around the abdomen at the level of the umbilicus (belly button). .

3. Hips:

The hip circumference is measured all around over of the buttocks

4. Stride length:

The stride length is measured from the inside of the leg to the end of the foot.

5. Side length:
Leg length (outside), from waistline to ankle 

6. The waist sizes displayed on size chart are  un-stretched

The dimensions entered are the external dimensions.

The dimensions can vary by 1 to 2 cm

1 inch = 2,54 cm