Makes travel through security a breeze
After using ziploc bags on many trips I decided to try these.  They are made of a sturdy, heavy plastic and the zippers are high quality.  You can actually fit quite a bit more than in a traditional quart-sized bag because of the width.  After having success with these I decided to buy another brand that was slightly cheaper so each member of my family could have their own.  Unfortunately I had to return the others because they were not compliant for international travel despite what the seller claimed.  Needless to say I purchased more of these.  Good investment in making life easier at the airport.
Rating: 5 stars