4 Packs of Mattress Bag Protector fit most kinds of full XL size mattresses, offering all-around protection to the mattress Made of 100% brand-new HDPE, water & dust resistant mattress bag protects mattress from moisture, dust, mice & bugs Each features 8 sturdy handles firmly attached to the top surface for easy carrying Smooth dual zippers fully open on 3 sides to allow for easier loading of mattress or box spring Washable surface for easy cleaning with a damp cloth when gets stained or dirty