I purchased two of these for some extensive travel.  They are sturdy and well constructed and seem secure enough.  The one problem I had with these locks, and it's serious enough that I won't buy them again, is that it's very easy to accidentally reset them to a different combination when they are open.  I now have two of these that I'm going to either trash or have to go through every 3 digit combination until I stumble upon the correct inadvertently new one.