[size] The width of the earrings about 0.9cm/ earrings length about 2.5cm(Not include hook earrings) [Material] alloy. Swarovski crystal pearl. Cotton thread [how to keep it] clean the accessories, and put it in zipper bag. [delivery way] Only by post.(Registered Air-Parcel) If you require faster shipping time, please send us a Pinkoi message.