EXFIL-11 features strong magnets in the mounting flaps to secure the bag to the gas tank. EXFIL-11 WILL NOT attach to plastic, fiberglass or aluminum tanks. Because of their strength, these magnets can affect electronic devices. Storing your cell phone in the outermost pocket(s) will minimize the potential of harm. Friction between the magnetic mounting flaps and gas tank is unavoidable; light damage to paint can occur. Minimize this by carefully cleaning all mounting touchpoints before attaching bag to bike. DO NOT put any material between the bag the surface of the tank—doing so will reduce strength of magnets. If your tank features a center console, open the lower zipper before installation to expand the bag. To remove the bag, LIFT—do not drag—each mounting flap to reduce potential for damage to paint. Remove bag when bike is stored to extend life of paint finish.