I'm selling this because I haven't had a chance to use it. It's new and unused, but due to long-term storage, there are small, dot-like stains inside. Please check the photos. Width: approx. 27.5cm Height: approx. 26cm Side gusset: approx. 13.5cm Bottom: approx. 12.5cm I think it's relatively clean, but please refrain from purchasing if you have any concerns, as it has been stored at home. Thank you for your understanding and purchase.