I love these pockets really much! It's a must have thing! I love to organize my stamps and dies, and I carry all of them in these stamp pockets! I always add a white insert to the pockets, because you can easily see the stamps, and it gives stability to the pocket. If I have coordinating dies, I add a magnetic sheet to the back and I can store them together. I store them by company and category and it's so clean and organized.
I am using all the sizes:
Small (for the 3x4" sized stamps and word dies)
Large (for the 6x4" sized stamps or dies, and I also carry the 3x2" sized stamps by theme in these, 4 pieces from the 3x2" stamps fits to one pocket)
Extra Large is for the 8x6" stamps, but you can also carry 2pc of 4x6" sized stamps in them. I also use this size for my interactive dies too.