Removable cover: yes, machine-washable If you’re looking for a softer seat cushion, this model is our favorite. Its main support mechanism is Purple’s proprietary 3D GelFlex Grid, a flexible ...

Purple makes a variety of seat cushions, from one that's specifically designed for lumbar support to one that's meant for portability. I tested the Royal seat cushion. At $99, it falls somewhere ...

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Purple cushions come in grid patterns - or they look like large, purple waffles, depending on how hungry you are. The grid shape collapses into itself to help accommodate your pressure points ...