Little Princess LittleWorld Extendable Bed Rail Grey No assembly ready to use required,

[Body size] When in use, maximum size: approx. 151 cm wide (net part approx. 140 cm wide) x 51 cm deep x 41.5 cm high; when reduced: approx. 90 cm wide x 7.5 cm deep x 51 cm high Please use with mattresses that are at least 12cm thick and up to a maximum of 36cm thick. Do not use on beds where the height from the floor to the top of the mattress exceeds 60 cm. Use with mattresses that are 189cm or deeper. This is an extendable bed rail that prevents children from falling out of adult beds.