If you are looking for a mailer that will work well under normal conditions this one should work fine for you. Personally I would use it for a very full package too but then I would probably use packing tape to strengthen some of the weaker points.I find that Staples Brand products rate pretty well against brand name products in most categories. The one main exception that I have found is with binders. I have found that Staples binders fall apart within 6-12 months with the stress that my kids put them through.