Shoe Trees are a must have for any decent pair 0f shoes. I always try to emphasis the importance of using them even if they’re not trees made by the specific shoe manufacturer, which of course are best for the shoes. A decent pair is still better than none at all.
Be sure to find trees that are as similar to the last as possible, that the wood is not polished so it can absorb perspiration, and make sure they’re the correct size. Too small and they serve little purpose and too large they’ll stretch your shoes not to mention making it difficult to insert and remove.
That brings me to my next demonstration. I sometimes watch as guys try to insert the trees; some do it with ease while others seem to have a difficult time. There is a bit of a technique but it’s quite simple to master. I’m using the Pierre Corthay Bucy to demonstrate.
If the shoes are oxfords or derby’s make sure they’re unlaced, monk straps should be unbuckled.
Hold the tree at a 45º angle with the outside edge of the tree facing down.
Insert the tree as far as it will go.
Then from the heel push it in the rest of the way.
Next simply push down on the back and you’re in.
It’s not unlike changing a tire on a car (which is much more difficult) you just need to do it once and you’ll never forget how.