I bought a queen size bed and it fits a queen size orthopedic mattress with room for reserve. (See photos). The pouch is sealed at one end (it's like a pillow case) and there is enough excess plastic at the open end to fold over and seal with tape. The bag is made from durable plastic and has taken it down stairs, loaded it in the trunk of a car and taken it down a few times, then made it to a new home. No breaks or tears.
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