This high-quality larger sized King/Queen mattress cover is large enough for today's pillow top mattresses. The LLDPE material has built-in stretch, so you don't need to worry about the cover ripping or tearing.
Perforations are built into the cover to ensure that mildew/mould is prevented. This is a key feature (not found in the box-store brands) that self storage operators needs to know about. Mattresses tend to retain moisture, and that moisture, if trapped, breeds mould and mildew. That is not an issue with this high-quality mattress cover.