Komperdell Highlander Cork Antishock Trekking Poles Light weight 7075-T6 Aluminum shafts resist corrosion and offer optimal stability. 3 sections of 18/16/14 mm and adjust from 71 cm to 140 cm. (27.9" to 55") The Expedition Cork grip is made of soft natural materials for comfort and durability. Adjustable, wide webbing wrist strap for comfort. Reliable BR-2 twist locking mechanism with diagonal expander for no slip adjustment Anti-shock devise is clicked on for downhill cushioning and is locked off to stabilize the pole when climbing.