After the reviews here I had somehow greater expectations. Finally, there are just simply Plastikpötte that you do not get really expensive (shipping Around) in normal construction market. I have 15 orders to justify the shipping, all in use, but will change gradually to 'normal' orchid pots. The optics destroyed just simply but the charm of the plant itself and orchid grower at a trade show have confirmed to me that this Plastikpötte are not absolutely necessary. My mother's orchids in pots even without draining grow splendidly. In addition - respect for accumulated heat. Plastic is not breathable such as clay without glaze.
Addendum: It stuck in each pot annoying identification labels which are only with difficulty to remove.