Ties that go behind the head keep a mask on much better than do ear loops. When I need a mask to stay on tightly for long periods, I wear these masks. They are also of heavy material that will help keep viruses out!
I bought this bag in 2014 and have used it daily since. It still looks great and hasn't come undone at the seams anywhere. I can't believe I've had it as long as I have. Would highly recommend. Great quality.