Product details:

NobleRealm Sleeper Sofa Bed Support Board makes your sofa bed much more comfortable. You could always feel the steel & hard support frame while you sleep on pullout sofa bed by using this sofa bed support board. Easy to Use and Store While the Sleeper Sofa Bed Support Board are folded, its dimension is approximately 48x12x3''. When you are not using it, simply fold up and put anywhere. While it is expanded fully, simply insert it under the mattress for installation. Anti-Slipped & Thicker & Upgraded Version The cover of Sleeper Sofa Bed Support Board is using anti-slipped material and is designed anti-slipped by adding small Circular Bulges on the surface of product. Such wood frame is also moistureproof, which is extremely suitable for long time use. Simply remove the cover and wash by washing-machine. No need to wipe it.