Overall I'm not very impressed with this product. I bought it as a set of 3 (Blue, Red and Yellow).
The picture is very deceptive, as it holds next to nothing. The design was slightly different to the picture as well. It says 1 litre in the description, which may be true if you don't do it up. If you roll the top down 4 times (which it tells you to do to make it waterproof) it holds about 1/4 litre...if that!
There are much cheaper alternatives on the market, of similar quality, and that actually hold something.
Having said that, the quality is good. Its handy for holding a camera and keys etc. The bright yellow one is good for keeping essentials in if camping, as its easy to see and light weight enough to hang from the tent. Good idea for keeping your torch, keys, medication, camera etc.
I wouldn't buy these again. The price is far too much for the size.