I bought a set of these in medium and large.  I wanted them for organizing my earbuds and cords for my iPod and my Kindle Fire.  The large ones are actually a little too large for those cords so I'm using them for something else (the cord for my Clarisonic), but the medium ones are perfect and I think I'll buy another set.  They're a little pricey for what they are, but they are sturdy and I also liked the different colors.  I wish they came in even more colors but for now these are just fine and my cords are all organized.