Mighty Ape is awesome and I recommend the website frequently. But I’m so sick of every single website (and now shops) asking for reviews!!!! Anyway, the cardboard boards are all the same size and colour, they come in a great package, and easy to use. Although I’m actually using them for storing fabric as I’m not a comic book fan. But I’m sure they would work well for that too. They’ve made my fabric storage much better. Have a great day :-)