ALPINE POLE CAM LOCK ANTISHOCK is an I-shape grip trekking pole with the cam lock style external locking system. You can adjust the pole to any desired lengh by simply flipping the cam lever. It is quick and easy to adjust, even when wearing gloves. ANTI-SHOCK system provides you a good cushioning when you walk, reducing the strain on your shoulders and arms. I-GRIP poles are designed to provide you greater balance and stability in uneven terrains with uphill and downhill, reducing the strain on your knees. They benefit you the most when you hold them in both hands. Set the length so that your elbow makes a 90 degree angle on a level ground.