Puebco's cedar shoe inserts are filled with high quality aromatic cedar shavings which naturally absorb odor and moisture from your shoes. Cedar is a natural way to keep shoes smelling fresh as it absorbs moisture and odor. In addition, cedar properties also include deterring moths and insects.
The inserts can be periodically shaken or gently massaged to re-release and re-activate the aromatics. Put them in your shoes when you store them or take them with you on your travels.