Easily insert the spiral internal design of the Airplane Cup and thoroughly dry the cleaned cup! The large-capacity diatomaceous earth moisture-absorbing stick with ample surface area achieves overwhelming water absorption and moisture retention! The internal structure that is difficult to insert with ordinary diatomaceous earth moisture-absorbing sticks can be smoothly inserted using this "Spiral Diatomaceous Earth Moisture-Absorbing Stick". It exhibits outstanding water absorption performance. WARNING: Keep the product away from children. DO NOT expose the product to humid places, direct UV or sunlight for an extended period.