The Distance Z Trekking Pole is an economical Black Diamond Trekking Pole which does not sag. Its durable aluminum construction is lightweight and weighs less than a pound per pair. Breathable EVA handles and adjustable straps make it easy to grip ensuring that it will not slip off if it falls. Besides Distance Z poles have the same folding design Same as other poles in the Z series: a button releases the sections for folding and a handle with a curved probe moves them together when we are ready to hit the road.