The tea infuser of WMF differs mainly by its attractive appearance of the usual silver standard tea eggs. Another difference lies in the size. By Schwimmreifen it has a circumference of approximately 6.5 cm. Therefore, it does not fit into any glass or cup each. Therefore, I would recommend going a glass / to choose a cup with a slightly larger diameter. Especially practical is the provided receptacle. One can infuser just put into it when the tea is ready, and does not need a separate dish.
Initially, the tea ball was difficult to open and close. After repeated use, this problem has given. One shortcoming is that when using water or tea in the shell runs with the male. Since it can be difficult to dry through the narrow crevices, I fear that similar over time mold could form. Therefore, a star deduction.