New, Unopened Little Princess Extendable Bed Rail

Long, retractable bed rail that prevents children from falling out of adult beds, with no assembly required.
High and wide design with a height of approximately 51cm and a width of approximately 140cm for wide coverage!
Made with netting, so it's comfortable even when tossing and turning! Also effective for visibility and breathability.
Retracts for storage when not in use!!
The part that slides under the mattress is designed with a wide stopper for a secure and stable fit, preventing it from coming out.
● Please use with mattresses that are 12cm or thicker, up to a maximum of 36cm.
● Cannot be used on beds where the height from the floor to the top of the mattress exceeds 60cm.
● When attaching to a mattress with a depth of 189cm or more, ensure there is a gap of 22cm or more between the left and right ends and the bed posts.

?? Although this item is new and unopened, it has been stored at home, so please understand this before purchasing.