Magnetic tankbags must be hand washed.
All other luggage:
1: Remove ABS inserts
2: Remove all the buckles / hooks you can.
3: Machine wash,
a) A Wool-lite type soft detergent
b) cold water
c) gentle cycle
d) run through rinse cycle twice if possible to assure soap is gone.
4: DO NOT PUT IN THE DRYER!!!!!!!!!
5: Hang the luggage in a garage or place where it can drip dry.
6: When it's about 75% dry, replace the ABS inserts, stuff as full as you can with
wadded up newspaper and let dry the other 25% of the way. This will "Iron" the bag from the inside out removing the wash wrinkles and make the luggage look as good as new. ;-)
7: Reinstall on motorcycle and go ridden!! ;-)