These are quite frankly brilliant! and I have no idea what I did before with a whole selection of items!. They are made of thick plastic with good quality zips that wre easy to open and close, and the sizes are all so useful.
There are 2 of each of the 6 sizes and I have found them ideal for paperword, my collection of bookmarks, hair bobbles, dog treats while out for our walk, pens, crafting labels, thread etc etc. I have already ordered another set.