LEKI Mountain Trek Super Makalu Ergometric Long Poles (Pair) Foam grip extension provides additional gripping area on upper shaft to handle switchbacks and abrupt changes in terrain Super Lock System offers a secure adjustment hold with the least amount of torque (hand strength required) to offer secure, reliable support Soft Anti-shock System (SAS) features an internal suspension system that cushions the impact of each pole plant for comfort and security Carbide Flextips are concave, cylindrical tips that provide a secure hold when Nordic walking off-road on all terrain and surfaces; carbide is extremely durable while the entire tip is replaceable.