Not all Birkenstocks are made out of leather and suede. Birkenstocks often launches different shoes made of synthetic materials that aren't leather. This would include EVA Malibu, Waikiki sandals, or any other shoe made with polyurethane. The cleaning process is simple for this material. Before cleaning with water or soap, you should remove any dirt that can be scrubbed off. Use a stiff bristle brush to remove any excess dirt from the shoe. You might be able to remove all marks off of the shoes with a damp cloth. For stubborn stains add a small drop of fragrance-free soap. Rub cloth and soap onto any stains on the shoe. Lay the shoes out in a dry area, away from any direct sunlight. Let them dry completely prior to wearing or else the shoes might become disfigured.

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Write a summary of the previous text in Indonesian:
Rawat Birkenstock sintetis Anda dengan cara yang agak berbeda dari yang lain. Bersihkan semua kotoran. Cuci sepatu Anda. Keringkan sepatu Anda.