LEKI Wanderfreund Black Carbon Trekking Poles Aergon Med: Its ergonomic shape provides comfortable support while walking. Lock Speed 2: Extremely Fast Adjustment Of The Pole Length. 30% Smaller, 25% Lighter And 20% Higher Holding Force - At Least. Flex Tip Short: More precise pole use and perfect grip in nearly all terrains. Rubber Tip Trekking: Made of vulcanised material.