Acetal is the plastic that we use in the manufacture of our plastic rims (at the request of the client). It offers some advantages compared to metal, especially anti-allergic properties, since it has very little water absorption and this means that germs cannot be created inside it (it is a type of plastic widely used in kitchen utensils such as cutting boards). Therefore, if there are allergy problems, even to gold, it can be a very good alternative.
Also highly recommended for playing outdoors. It is a material that does not get cold and offers many advantages when playing outdoors in cold areas, giving a feeling of warmth and comfort to the lip.