I needed an odd size photo sleeve to use for hand made greeting cards, and could not use the standard 4 x 6, so I was lucky, when searching the internet to find these 6x6 photo sleeves which are larger than the cards, so they fit perfectly!
These pages work really well for storing and organizing my embossing folders. No more scrabbling around in a shoebox to find what I want. It works for about 90% of the folders.
I have purchased a few 3 ring 12x12 scrapbooks. I use these photo protectors to sort my stickers and embellishments. I have albums for animal, baby, alpha, travel etc. It is so easy now to see what I have and to find what I want.