Metal hinge and button can open and close the case fairly easily. Milk teeth box size: milk teeth box size about 12.5 x 12 x 3.8 cm. Please make sure the milk teeth box is dry before storage. Engraving Wooden Milk Tooth Box: You can engrave your child's birthday file in the tooth box. You can write the name, birthday date, birth weight, birth height and blood type with pencils. Personalized Gift Baby Teeth Box Boys: Tooth box can collect your baby's teeth and give your baby wonderful memories. Each baby teeth box is unique for kids and babies, as it can record the unforgettable moments of children's growth. Features: 1. Wooden kids milk tooth box Great ideal for the festival/important moment, like Christmas, New Year, birthday and etc. 2. You can write down your information in the wooden kids milk tooth box. 3. There is a separate compartment for each milk tooth. 4. Each milk teeth box is unique for babies, as it can capture the unforgettable moments of children's growth. How do you prepare your milk teeth for long storage? 1. Put the milk tooth in boiling water 2. Boil for five minutes 3. Take out the milk tooth from the boiling water 4. Dry the milk tooth well(Please make sure the milk tooth can is dry before storage Size: ca12.5 x 12 x 3.8cm (Please allow 1-3mm error due to manual measurement.) Use: Preserving baby teeth Packing: 1* baby teeth box