This one is just about as functional as it gets. The top-loading roll-top closure provides additional space when needed (and is honestly great for traveling). It's got an exterior zip pocket, easy-access side pockets, custom ML webbing, interior pocket, key leash, exterior accessible 17" padded laptop sleeve, WhiteGuard coating that repels water. The durable cotton canvas is made with 65% recycled cotton and coated with a WhiteGuard finish that keeps dirt and water off. It’s just as easy to clean as it is to wear. Lined with 100% recycled polyester.