LEKI Super Makalu COR-TEC PA Hiking Poles (Pair) Pair of trekking poles, adjustable from 31.5 to 55 inches Soft Antishock System cushions the impact of each pole plant for comfort and security Ergonomically designed COR-TEC grips made of 80 percent natural, ground cork Easy Lock System allows the pole length to be adjusted with the least amount of torque Lifetime warranty against shaft breakage