This carrier provides plenty of room for my notebook, 2 full size laptops, 3 iPhones, 2 iPads and the many chargers that I carrier daily for work. I've had this carrier for about 3 months and I use it 5 days every week.  With all of my items this bag can get heavy so I wish it would have come with a shoulder strap for the times I need to carrier it. The bags material seems to be durable and strong. The hardware that connects the wheels to the bag is made of some kind of hard plastic.  The wheels are made of rubber and not plastic.  So far I am very happy with the bag.