Durability: This wooden toy for kids is made of sturdy wood, ensuring it can withstand long hours of play without being easily damaged Double Sided Cards: The kids digital decryption comes with 24 double sided cards, offering 48 advanced puzzles and various scenes to provide a fun experience for your child Enhance logical thinking: This number decryption game gradually improves number sense and logical thinking, making it a great educational tool for your child's cognitive development Product size: The puzzle cards measure 13cmx13cm/5.12inchx5.12inch, the numbers measure 9.2cmx3cm/3.62inchx1.18inch, and the color box measures 16.5cmx15.3cmx4cm/6.50inchx6.02inchx1.57inch,great size for little hands to handle Package includes: The package contains 20 puzzle cards and two sets of numbers (1-9), providing everything you need for hours of fun filled learning Specification: Material:Wood Paper Size Chart: Question Cards Size: 13cmx13cm/5.12inchx5.12inch Number Size: 9.2cmx3cm/3.62inchx1.18inch Color Box Size: 16.5cmx15.3cmx4cm/6.50inchx6.02inchx1.57inch Package Includes: 20 Cards 2 Set Numbers (1-9) Note: 1.This is not infant toy , please take away from children to avoid eating. 2.Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.