These shoe trees, simple, are good bills and very convenient to use. they adapt to all footwear, wood absorbs moisture from perspiration and grooves allow the ventilation and drying. Use as soon as one takes off his shoes, DO NOT let the shoes dry without embauchoir! Very good quality / price ratio, compared with shoe trees "full" proposed by shoemakers, much more expensive, very heavy (note the weight of the bag for air travelers like me) who do not fit all shoes.