Some varieties of nordic walking poles have adjustable height to make them easier to store or to share between people.
Before you begin walking, adjust your poles to the correct length.
The proper pole length is approx. 70% of your body height. Multiply your height in inches or in centimeters by 0.7 to get your pole length in the same units.
The correct length is such that when you extend your arm with the pole upright, your arm is straight with a slight bend at the elbow.