Size: Fits Twin/Full Size Mattress with height up to 14 inches (≤14 inches). Please see the attached size guide picture to select a suitable plastic bag. | Please Note that there is NO zipper or adhesive strip on the end. Place mattress or box spring inside, then overlap the extra plastic and seal tight with packing tape. | Extra Thick: Each package includes 2 bag made of 4 Mil extra thick polyethylene material. The item weight is about 3.4 pounds ( you could refer to "Product information" in detail page for accurate item weight). | Perfect for moving, storage, renovation or mattress disposal. Great solution for disposing of mattress or box spring infested with bed bugs. | No vent-hole design. Perfect for long term storage. Water and dust resistant material protects mattress from moisture, dust, mice, and other pests.