The Indoor/Outdoor dining chair cushions have been a great replacement for the dirty original cushions on our porch's dining chairs.  The cushions fit our chairs great.  I tied them right on.  They are very comfy and have been keeping their shape well.  These came in a set of two, which was exactly what we needed and fit just as well as the original except these are clean and I think will be easier to keep clean.  The performance fabric is great.  We use them on our covered porch, so they are somewhat protected from the elements but do get hit by the occasional rain and sun (and my kids!).  I like that the covers zip off for easier cleaning.   The light off white color almost exactly matched the original cushion color.  We really love the neutral but bright color and these comfy cushions.  I would recommend these dining chair cushions.