Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Think Ziplock

These bags were not what I was hoping for and they have two features you should be aware of:1) They are smaller than you think. I bought the 4x5 thinking I could store my 4.5 inch iPhone in one - it will not fit without bursting the seams.2) They are not "thick" plastic. They are one step up from a freezer Ziplock bag.I'm sure they are waterproof but they will not last much more than a Ziplock, maybe one backpacking trip as long as you put soft and rounded and small objects inside them.