Best hiking poles for Kilimanjaro and elsewhere

I used the LEKI Micro Vario Carbon Trekking Poles. They were an absolute hit on my hike. I loved them, and also everyone else thought they were really cool.

Now I admit this selection was not based on my own research, but on expert advice. So here is why they are so cool, or what to watch out for in similar products:

Foldable: can be stored easily in your daypack/carry-on luggage
Carbon: ultra-light and cannot break
Extended grip: easy to quickly grip up or down when the terrain changes (no need to adjust the total length)
Adjustable length: for your height (your elbows should be roughly at a 90 degree angle)

Unfortunately, the LEKI Micro Vario Carbon Trekking Poles are also amongst the most expensive poles (if not the most expensive), but they seemed like a worthwhile investment to me. As they are carbon (which also makes them so expensive), they cannot break. So unless you lose them, they will last for a lifetime.