Extreme Bed Protector or an extreme mattress cover is a sheet of Opalo you can easily drop on top of your bed! It will also stay in place since it is secured from the sides.
 
These bed protectors in stock are
60 in x 80 in x 12 in (152 cm x 203 cm x 30 cm)
 
Will fit in narrower beds too, but not optimally.
 
The Opalo fabric used here is
very shiny
super sturdy
easy to keep clean