Nelson Rigg SE-3040 40L Waterproof Motorcycle Backpack/Tail Pack On short trips, strap into your Hurricane Bag and go. Heading out for the weekend? Tuck in your backpack straps and strap it down to your bike. The waterproof SE-3040 Hurricane Bag is up for either task. The rugged Nelson Rigg Hurricane looks a little more complicated than your average backpack. That's because it is. This roll-top bag is fully kitted out with MOLLE webbing and multiple tie-down points so it can be secured to the tail end of your bike. The bag features an air purge valve so you're not fighting any trapped air when forming a water-tight seal or using the compression straps. An external pair of bottle holsters support the transport of 1L fuel bottles, water or Brawndo (sold separately). Strap the Hurricane to your back and lock it in with the sternum and waist straps or tuck all that away and go tail bag mode. It's your call.