
I bought these for my sofa and wanted one for the love seat. If you buy one for a chair, it comes in a set of two, enough for a double seat. My pillows didn't sag, but I bought supports to prevent sagging. They gave the pillows a firmer feel and they didn't slip. Simply unfold and place under pillows. My other supports were like slabs of slate and did not stand still. (I've had this furniture for 4 1/2 years) The price (for backers) was reasonable and worth it.

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