The Protect-A-Bed Satin Smooth DynaTex Waterproof Extra Long Double Mattress Protector delivers reliable protection and luxurious comfort for extended double mattresses. Its soft satin smooth surface enhances sleeping comfort while the waterproof barrier protects against accidental spills, stains, and allergens. The breathable DynaTex construction promotes airflow to maintain a fresh and hygienic sleep environment. Designed with a deep fitted skirt, it securely fits mattresses between 20cm and 50cm deep.