This item has been stored at home for a long time. As it is quite old, please refrain from purchasing if you are concerned. Please purchase with your understanding. Size: Approximately 23.5cm x 29.5cm, no gusset. This item had a plastic bag on it from the beginning, so I cannot tell the condition of the contents. I think this is a very rare item. How about adding it to your collection? I will take waterproof measures and fold it in half before shipping it in a box. Thank you for looking.