Used for several months, then stored for about three years after washing at home. Used on the second-row seats of a Noah. There are no instructions on how to use it. The size is 55cm wide for the seat surface and 55cm wide for the backrest (measured by an amateur, so please use as a reference). I don't see any noticeable stains, but I'm listing it as having scratches due to the long storage period at home. I thought it could still be used, so I decided to list it. Feel free to negotiate the price. Please refrain from purchasing if you are sensitive to used items.