These (not so) little self seal bags are a great quality. Perfect for storing many things, but in particular for storing home-made flash cards (the purpose for purchasing). These bags are clear, as described and are made of a thin, yet strong, material meaning they don't add to the depth when storing. The seal at the top is sturdy and will handle the riggers of frequent open and closing I'm sure.
The price of these bags is excellent compared to high street prices, and they are fine for light to medium duty use. The re-sealable clips work nicely, and the polythene doesn't tear when the bags are re-opened.