High Quality Materials:Environmental ABS plastic, no odor and sturdy and not break easily, an interesting safe specially tailored for children. Password Safe Box:This safe can only be opened when you enter the 4 digit password, the green light will turn on then you can turn the knob clockwise and open the door.(Default: 0000 Changeable passwords as you like). Money Management for Kids:Guarding kids personal stuff, can store coins and paper money or other key items, greatly help your kids to develop a good habit of saving money. Teaching life skills and money management at a young age is such a terrific thing. Easy to use:Insert the coins from the coin slot on top of the bank and when you deposit bills, it will suck the money automatically instead of sliding it in. No one can open the safe without a password.