I'm selling this because I bought the wrong size! It's the perfect size for a single-seater sofa♪ Please check the images for the detailed dimensions. It's been taken out of the bag once, but it's unused. It's soft and feels good against the skin, and the back is fully non-slip, so it seems easy to use. How about it for a spare cover? (*^^*) I haven't used it, so I haven't confirmed, but it doesn't seem to be completely waterproof. I think it has water-repellent properties, so if you wipe off any moisture immediately, it's less likely to soak into the sofa. Thank you!