This back pack is built to endure heavy loads.  This is the second Under Armour we have purchased because of the durability.  The handle at the top is heavy and padded for easy carrying if you choose not to put it over your shoulder.  In fact, my son used the first Under Armour back pack for 2 years of middle school carrying 4-5 text books a day back and forth from school on a bus.  Another words it was not "well" cared for.  Finally after two years of use the top handle did start to break-but it lasted "much" longer than any other brand we have ever purchased.  The stability strap on the rear of the back pack helps from the backpack slipping around.  The material is heavy and built to last.  I have no complaints with this back pack, it is well worth the money.