Bed safety sides rails guards x 2

2 x adjustable bed sides adjustable. 1.4 meters x 50cm The sides will fold down to allow perfect mattress level access. Works on single or double bed That is a bed rail (also commonly known as a bed guard or safety rail). Based on the photos, this is specifically a fold-down or swing-down model. Here are a few more details about how it works: The Frame: The large U-shaped metal bar at the bottom slides underneath the mattress. The weight of the mattress holds it in place. The Strap: The white strap with the red buckle (visible in your first photo) is a safety anchor. It is meant to wrap around the bed frame or to the opposite side of the mattress to prevent the rail from shifting outwards and creating a gap. The Hinge: The large circular plastic joints allow the mesh section to fold down, making it easier for a child to get in and out of bed or for you to change the sheets without removing the entire unit. It is designed to prevent toddlers or young children from rolling out of a "big kid" bed during the night.