1. telescopic length 2. changable material 3. durable quality 4. steady structure ItemGC-TP010SizeAdjustable 81-135cmMaterialAlu 6061+PP handleCarton size/Qty83×28×28cm/50pcsG.W/N.W16/15kg Can be also used as walking stick, walking pole for mountaineering,hiking, field travel. trekking pole