I purchased a large quantity of these miniature items to remove the keyrings and display them. I believe they are made of metal, not plastic. The back of the bag has a see-through pattern. They do not open. Although I haven't used them, one of the jewels has come off. Bag size: Approximately 4.3cm wide x 3cm high at the widest points. Mark: Decoration Weight of one piece: Approximately 42g They have some weight to them. Total length: Approximately 12cm Different colors are also on sale. How about it? Thank you. ※I have pets. ※I am a smoker. Please refrain from purchasing if you are concerned.