A mattress unfortunately has similiar realities to a vaccuum. It attracts dust, dust mites, skin cells, etc. To properly ensure no harmful forces enter the mattress we highly recommend purchasing a protector to properly care for your bed.
Without a protector your mattress can double in weight after 8 years form skin cells, sweat cells, and other bodily fluids entering the mattress
Waterproof material prevents any spills from entering the mattress
Create a barrier to stop dust mites and allergens from taking up residence in your mattress