Durability truly depends on the materials used in the construction of a product, however, it also depends on the way consumers handle and maintain the product. The materials used in the construction of the growth charts in this buyer guide are plywood, canvas, and cardboard paper.
The manufacturing company may opt to use any of these 3 depending on the kind of results they want to achieve. Canvas appears to be the toughest, and it can easily be rolled for safe keeping. Cardboard is tough too, but depending on the thickness used. The downside is that it can be affected by moisture. Same as plywood, but a little tweaking can be done in both cases to improve their resistance to moisture.