Found this armband to be very durable. The quality of the material is excellent. The first run and went out on the weather was dreadful so this was to be the first test of the band for me. It held out well and there were signs of any leaks or faults with it in that departement HOWEVER...the only slight hitch (the reason for 4 stars instead of 5) is that the velcro elastic does undo itself farely easy at points but that is rare. Overall a very well made product which I'm happy with.