The size chart is for reference only. A5 size can hold 88 pieces of 3-4 level children's puzzle;. A4 size can hold about 330 pieces of 5-8 level children's puzzle. Material: nylon. There may be chromatic aberration between different computer monitors.
The "3PCS Toy Storage Bags Building Block Zipper Organizer Transparent Pouch" would be a great fit in a school, church, or daycare environment for storing and organizing building blocks for young children.
