There are two things that are important about shoe trees:

1. They fit
2. They are absorbent

We cut ours from the original last that the shoes were made on so that they fit perfectly. They are made in super absorbent 'Obeche' wood, which is a very dry desert wood that can absorb some of the 2 litres of sweat that can leave a man's body through his feet every day.

Think of it as putting your shoes back on the last every night.