1. Material: ABS 2. The diameter of the upper cup holder can be telescopically adjusted, and the adjustment range is 75-153 mm to meet more storage needs 3. Anti-shock foam to avoid abnormal noise when it collides with the cup 4. The fixed edge of the base is covered with non-slip silicone 5. The elastic structure of the inner wall of the cup holder can limit the problem of cup shaking 6. With a compass, not afraid of getting lost
