There are two kinds of boots you can use to climb Kilimanjaro: Solid trekking shoes, or solid alpine boots. Here is a guide to explain the differences.
Guide for perfect fitting and ‘breaking in’ your mountain boots:
Try on your boots for your Kilimanjaro climb with thick hiking socks. The boot should fit like a glove when you walk around a little bit. You MUST try the boot also on a slope or a ramp, anything with an angle. Your toes must not touch the front of the boot when standing at an angle. If they do, choose half a size less or even one size less and try again.
Once purchased your mountain boots must be ‘broken in’ for Kilimanjaro. That means you should wear them for some days for hiking, to the supermarket, the gym or the local park.