This pair of BAFX Products hiking , walking , trekking poles are made from light weight durable aluminumEach pole can be extended to any length from 26.5 to 52″ inches in length. The poles extend by turn locking system & each pole has measuring marks on the middle section for easy adjustment to your preferred height on every trip. They have a durable metal tip, under the rubber foot at the bottom, for trekking on more rocky and uneven terrain. Each pole comes with an optional mud disk for use on softer ground coverings so the poles won’t sink. Each stick contains an anti shock spring located in the upper section of each pole for more comfortable walking by absorbing the impact of each pole placement. The poles also come with an adjustable wrist strap for easier hiking.