The Leki Thermolite XL Antishock Trekking Poles are ultralite trekking poles that feature the AERGON grip that offers a variety of comfortable, secure gripping options and Leki's famous Soft Antishock Lite System. The Antishock Lite System reduces stress on your body's joints, muscles, and ligaments by absorbing impact energy into the lower shaft. The Thermolite XL also features Leki's Speed Lock System which is easy to use and requires the least amount of torque (hand strength) and only 3-6 twists to securely lock the poke adjustment. The optimized packing size increases your freedom of movement in trekking or when transporting your poles.