A "DeoWirkung" within the meaning of the word, I can not tell, but probably they act odor-reducing.
Purchase is crucial for me that the sole is washable. However, as a hand wash at max. 30 °, because I have very often wash the soles. Durability and price are acceptable under these conditions.
The advice to pay attention to the exact size, I can only repeat again. In addition, one should as far as possible, make sure that the shoes do not fit too perfect, otherwise they will be quick to work closely with these deposits.