It says something about how much the manufacturer stands behind the product. Black metal frames are made overseas. Expect to wait for a part if something breaks or if youre past that 90 day warranty, expect to pay for all replacement parts and associated costs to get your frame up and running again. Consider too that parts may also no longer be available should something break. Metal bars allow mattresses to slide into and through the gaps between each bar.
Secondly, it should be borne in mind that it isnt the futon frame that provides the comfort when either sitting or sleeping on a futon: it is the futon mattress that provides the comfort. A futon bed mattress made for a tri-fold futon frame is not as thick as that for a bi-fold futon bed frame. Therefore, if you intend to sleep on your futon regularly you might be best to buy a bi-fold futon bed mattress: a thicker mattress tends to provide more support.
The flexibility of an inner spring futon mattress is quite poor, but you would only really buy this type of mattress if the futon is going to be used as a bed most of the time. Futon beds are a popular choice for many consumers due to their flexibility of function. Before buying a top rated futon bed mattress make sure that the qualities - mentioned above - of the mattress are what you require. If you know exactly what you want before you buy you are going to avoid being disappointed with the purchase of your futon bed.
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