Nelson Rigg Backpack SE-3020 HurricaneRIGG GEAR LIFETIME WARRANTY Electronically heat welded seams make this bag 100% waterproof Made of waterproof and durable Tarpaulin PVC Air tight roll closure ensures no water enters the bag Coated outer material prevents slipping or marking Waterproof purge valve makes load compression easy Reflective webbing and external bungee storage system Inner sleeve holds notebooks, tablets and up to 15 laptops Includes quick release strap to mount as