This is a Shimano cushion. Please refer to the images for the size. I've only used it twice, so the condition is good as shown in the photos. It's a used item, so please refrain from purchasing if you are overly concerned about minor details. There are a few small, inconspicuous scratches, but I don't think they're noticeable. I'm also selling items from various other genres, so please take a look if you're interested. Thank you.