Dear N Ryder,

The Origins Pocket Latex 1500 is a one-sided mattress and can be placed on a metal bed frame. I assume that the bed frame has either wooden or metal slats upon which the mattress will sit, if this is the case you should look to place a barrier between the slats and the mattress in the form of thin (3-5mm) MDF. This will provide the mattress with a uniform surface upon which to sit and avoid the possibility of ridging occurring as a result of the mattress dipping into the gaps. I trust that this helps.

Kind regards