Abstract: A protective mattress cover for the foot of a mattress which can fit mattresses having varying thicknesses is disclosed. The mattress cover adjustably connects to itself underneath the mattress or to the box spring decking material beneath the mattress. In this way, the mattress cover can firmly wrap mattresses having various thicknesses. The mattress cover protects the mattress from soiling during testing by a consumer. The mattress cover is preferably made of a clear material so that the mattress appearance, product information, labels and logos are not obscured.