Get more people to trust your brand with the Vertex (R) Durango weatherproof computer backpack! It's made with waterproof materials and has a rolltop opening. Other features include exterior adjustable side buckles for secure closure and expandable volume, modular pouch mounting points on the front of the bag, an interior laptop compartment for up to a 17" device, a water-resistant front zippered pocket, ventilated EVA padded shoulder straps with neoprene backing and a top grab handle.