Koala Mattress Semi-Double Protective Cover

I purchased a protective cover for a Koala Mattress semi-double size in April, but I mistakenly bought one for a double size due to an error in the mattress size, so I am selling it.

[Condition]
Unused
(Only opened the box to take photos)
The cardboard box has been peeled where the shipping label was removed.

Please feel free to comment if you have any questions.