PRICES MAY VARY. Plastic MATERIAL: This mattress bag is made of premium grade 100% new polyethylene for durability and better protection, designed and manufactured specifically for mattress protection MULTIPLE PROTECTION FUNCTIONS: Our mattress protection bag is the ideal choice for long-term storage, protecting mattresses or other items from the influence of dust. Ultra long bags are sealed with packaging tape to isolate air, moisture, dust, and debris. Secure with custom packaging straps to pr